Enterprise-level AWS migration for a Global Luxury Jewelry Brand

Japan – A journey of connection, learning, and cultural exploration

From November 11 to 17, 2024, the SupremeTech team traveled to Japan with three main goals in mind: To explore and learn from Japanese corporate cultureTo visit and work with key clients: This included a visit to Classmethod (CM) and on-site discussions with one of the major clients involved in a key project at our companyTo attend Inter BEE, one of Japan’s leading tech events. The exhibition brought together cutting-edge trends in broadcasting, content creation, and digital entertainment — a must-see for anyone in the industry. Beyond the professional takeaways, the business trip gave us a deeper glimpse into how the Japanese work, connect with others, and shape their distinctive workplace culture. Detailed Agenda Time: 11/11/2024 – 17/11/2024 Location: Tokyo – Chiba, Nhật Bản DateMain activities10/11Travel from Vietnam to Tokyo11/11Work at Classmethod’s office & visit the client site12/11Continue working at Classmethod’s office13/11Attend Inter BEE 2024 in Chiba14~15/11Remote work from hotel: content wrap-up and business trip report preparation16/11Weekend break – Explore Hakone, enjoy hot springs, and the beauty of the Japanese landscape17/11Return to Vietnam Unforgettable Moments & Highlights Office day at Classmethod & client meeting for the project First Two Days: At Classmethod’s Tokyo Office Our first two days were spent working at Classmethod’s office, located on the 26th floor of Hibiya Tower — right in the heart of Tokyo. From up there, we were treated to a sweeping view of Tokyo Tower, and even caught a glimpse of Tokyo Skytree in the distance — a truly breathtaking sight that had us all pausing in awe. The office is thoughtfully designed, with a variety of modern, functional spaces: Cafeteria area: An open, friendly space where people can grab tea or coffee, chat freely, or even get some work done. One particularly charming detail was the “souvenir corner”, where employees leave small gifts or local specialties from their business trips — a fun and meaningful way to share experiences with colleagues.Meeting zone: Equipped with both group meeting rooms and private booths, this area supports a range of activities, from team discussions to quiet, focused work.Internal workspace: A spacious, quiet area reserved for employees — ideal for deep concentration. In the afternoon of our first day, we headed out with Classmethod’s team to visit one of their key clients. We attended a vendor meeting, met the stakeholders in person, and gained a much clearer picture of how our collaboration might evolve in the future. It was a solid start and just the right dose of excitement for the first day. Discovering Japanese Work Culture at Classmethod’s Office Flexible and Respectful Work Environment:The office features an open layout with minimal physical barriers but is smartly designed to maintain focus (e.g., personal booths and small meeting rooms). Everyone is encouraged to choose the work arrangement that best suits them.A Culture of Sharing and Internal Bonding:One great example is the “お土産 (omiyage)” corner in the cafeteria — a small but meaningful tradition of sharing. Boxes of sweets and gifts from different regions aren’t just snacks; they’re little stories passed around naturally among colleagues, building bonds and sparking conversations.Focus on Health and Comfort:Free tea and coffee are always available, and there are cozy spots throughout the communal area where you can take breaks and relax. This thoughtful care helps everyone recharge and stay creative throughout the workday. We truly felt that this is a workplace where people are respected, connections are encouraged, and productivity doesn’t come from pressure but from a spirit of initiative and mutual support. Meeting the Vendors Collaborating on the Project At the Vendor Meeting, we were warmly welcomed with coffee and pastries — a perfect example of “omotenashi,” the Japanese spirit of hospitality. When I introduced myself as being from Vietnam, everyone was pleasantly surprised and delighted, which created a friendly and warm atmosphere right from the start. Through the meeting, we not only got to know our partners better but also clearly felt how important personal communication is in technical collaboration — something that online meetings sometimes struggle to capture. Memorable Moments Beyond Work:  A Fun Visit to a Major Restaurant Chain (Day 2) On the morning of Day 2, before heading to the office, we stopped for breakfast at a restaurant that’s part of a well-known chain — and interestingly, also a client in our current project for a takeout ordering system. The menu was huge. It took us a while to finally decide on our breakfast picks. The restaurant had adorable cat-shaped serving robots with expressive digital faces, but our table was actually served by a real staff member (still cute, though!). Even though it was just a quick breakfast, being in the actual space where our product is used gave me a much clearer sense of the customer’s needs. It was a small but meaningful reminder of why we build what we build. Attending the Inter BEE event Inter BEE is Japan’s biggest tech exhibition dedicated to broadcasting, video, audio, and communications. It’s where major players like Panasonic, Sony, and Hitachi showcase cutting-edge technologies alongside smaller companies offering innovative tools, from video editing software and specialized storage devices to creative graphic design solutions. Some of the standout trends we saw at the event included: AI-powered content production4K/8K broadcasting and cloud-based transmission solutionsNew VR/AR applications in entertainment Impressive Moments from Inter BEE Attending Inter BEE was a completely new experience for me, not just because of its massive scale, but also thanks to the level of professionalism and precision in every detail of the event. Our Company’s Activities at the Event: Our team, in collaboration with our partner Enlyt, set up a booth to showcase CloudTV (internally known as OTTclouds) — a cloud broadcasting platform currently being developed and deployed for the Japanese market.While Mr. Hoang, the project lead, was busy welcoming visitors at the booth, I had the chance to explore the entire exhibition and dive into the latest technologies in the industry. A Few Highlights That Stood Out:  Flawless “Japanese-style” organization:From the booth layout and clear navigation signs to helpful staff everywhere, everything was organized with incredible logic and clarity. Despite the venue's size, finding our way around was surprisingly easy.High-quality tech booths: Every exhibitor put real effort into both content and presentation. The booths were visually impressive, filled with interactive demos and staff who were well-trained. Some even let visitors try out cutting-edge technology, such as VR gear or TV production systems, right on the spot.An authentic feeling for the broadcast-media world:For the first time, the TV and broadcast industry felt tangible to me — no longer distant or abstract. Seeing massive cameras, complex post-production setups, and live demos of AI dubbing or audio processing gave me a whole new appreciation for what happens behind the scenes of every show we watch.Learning through conversations:Beyond just looking around, I also had the chance to chat briefly with staff from a few booths. Even though I couldn’t catch every technical term, those exchanges were incredibly meaningful — a reminder of how valuable honest, human-to-human knowledge sharing can be. What I’m Taking Home from the Business Trip Our business trip to Japan brought so many meaningful takeaways — not just for me, but for the whole team: We got to see firsthand the meticulousness, warm hospitality, and thoughtful spirit of sharing that define how Japanese companies operate.From meaningful conversations to in-person meetings, we deepened our connections, especially with strategic clients involved in our company’s flagship projects.Inter BEE provided us with a front-row seat to the latest developments in broadcasting and digital entertainment — from AI-powered tools to immersive media solutions. This Japan business trip wasn’t just about understanding our clients or getting updates on current projects — it was also a rare chance to immerse ourselves in Japanese corporate culture, learn from how events are run, and truly feel the professionalism that drives the way people work in Japan. We’re hopeful that this won’t be the last time. Here’s to more chances in the future to reconnect, learn, and grow together. Snapshots from the Business Trip More snapshots from the Classmethod office and our client visit  A cozy space that doubles as a cafeteria and a free-seating work area Poster of the football team that Classmethod sponsors Instructions for staff on how to order food in the cafeteria View of the park from one of the meeting rooms Meeting with Classmethod team members from the project we're collaborating on The client team member prepared a slide showcasing different types of sweets for everyone to choose and try during the meeting. Some photos from the Inter BEE event

Enhance the Customer Experience on Digital Platforms While Protecting the Legacy for Luxury Brands

Luxury branding is undergoing a digital revolution as brands adapt to meet the evolving expectations of modern consumers. A case study of a century-old luxury brand demonstrates how traditional values can be preserved while embracing digital transformation. Through mobile-first solutions like LINE Mini App in Japan, brands can now enhance customer experience and offer seamless digital experiences for events, store check-ins, and personalized services.  The key to success lies in striking a balance between heritage and innovation, implementing localized solutions, and maintaining simplicity while delivering personalized experiences. The future of luxury retail depends on unified loyalty programs, cross-channel CRM systems, and continuous digital innovation, enabling brands to remain both timeless in identity and contemporary in customer experience. Digital Transformation for Luxury Brands As widely known among business owners, digital transformation in customer experience in this decade means utilizing technology to diversify and enhance customer experience across digital touchpoints commonly used by general mobile users.  For some traditional businesses, digital transformation includes migrating sales and operations to a digital environment and unifying the customer experience across online and offline channels. Even though the strategies may vary among brands, there are some common tactics, including online bookings, e-commerce, digital membership, and messaging apps. No business can stand on the sidelines of the digital transformation wave unless growth is no longer among their primary objectives. Luxury brands, regardless of their size and traditional roots, are compelled to undergo digital transformation, especially when serving the top, elite, sophisticated, and tech-savvy clientele. While competition is fiercer than ever, digital transformation is rather a must than a choice. The point is, which brand does a good enough job of balancing its unique heritage with digital experiences? Luxury shoppers expect fast, convenient, and mobile-first service, but they also demand exclusivity, consistency, and personalized experiences, especially in huge-spending markets like Japan and China. The real challenge for luxury conglomerates is to remain true to their identity while meeting the new digital expectations of their customers. Balancing Legacy and Innovation: A Case Study of SupremeTech’s Client  Though flashy, the concept of digital transformation may seem, implementing it successfully comes with more challenges than thought. It's a proven point that we made when we began working with one of the world's most prominent luxury brands, boasting over 100 years of history. While its legacy and loyal customer base remain strong, it cannot neglect the growing preference of customers to connect more conveniently via mobile in specific markets. In our case, the market is Japan, a matured market regarding mobile-first customer experience.  At the time of collaboration, there were some obvious challenges to elevate and enhance customer experience of luxury brands. Manual processes, such as event RSVPs, store check-ins, and after-sales service, could be partially digitized to enhance customer bonding and ease operations.User-friendliness and convenience should be at the heart of any digital transformation idea. Japanese customers, although tech-savvy, do not readily adopt using an entirely separate app for minor tasks. Existing and standard tools, such as SMS messaging and Line messaging, did not provide sufficient support and could not be customized to meet the expectations of high-end customers in key markets like Japan, where mobile-first and personalized experiences are preferred. So what’s the challenge? We need to deliver a digital solution where personalized customer service and event booking are likely to take place and sync it up with offline journeys, making the online and offline experiences feel seamless. The newly built solution not only needs to fulfill the objective but also needs to align with the client's existing system, both technically and aesthetically. Last but not least, it must be friendly to Japanese customers and require minimal effort to stay connected.  Apart from the challenges above, for some luxury conglomerates, it takes multiple layers to protect their heritage and ensure that the brand voice is consistently echoed across all customer touchpoints. Therefore, a multi-layer decision-making process is something that a technology partner like SupremeTech is challenged to manage to ensure technical deliveries. See how our development team thrives in collaboration with our client's multi-layered and multinational system. >>> Read more related articles:  LINE Mini App: Digital Transform Customer Service with Digital Point CardsLINE and Mobile Commerce Platform in Japan Be the Early Bird in Localized, Digital-First Experience with LINE MINI App For these similar requirements in the Japanese market, LINE MINI App, the most popular messaging app in the country, has been and will continue to be the best choice for maintaining relationships with end customers. That’s why the client came to us with a clear goal: to enhance customer experience through a LINE Mini App while preserving their luxury heritage.  The advantages of the LINE MINI App are also its setbacks in terms of requirements. While other competitors also use LINE MINI App for the same purpose, our technical solution would help our client differentiate themselves in the luxury industry that worships outstanding experiences. Through collaborative workshops with both client and design teams, we identified pain points across customer touchpoints and internal operations. There was strong motivation for change, but any solution had to fit seamlessly into their existing ecosystem of legacy systems and workflows. Instead of generic tools, we developed tailored, digital-first experiences that aligned with their premium brand identity. By bridging business goals with real user needs, we turned high-level digital ambitions into localized, practical solutions that delivered lasting value. Mobile-First Platforms for Events & Services In markets like Japan, mobile apps are the gateway to customer and brand connections. We started to help the brand integrate mobile-first tools that allow customers to do the following tasks within their LINE App: RSVP to events, receive digital tickets, and check in via QR codes. Digital event RSVP is enabled and synced with check-in at events. Access personalized services through local platforms.Personalized follow-up messages with exclusive content—all integrated within LINE, Japan's most popular messaging app. We customized the LINE MINI App for clients by building the needed features. Let’s explore a tailored RSVP flow—carefully designed to set the standard for luxury brands. This streamlined, digital-first experience has already positioned our clients as leaders in delivering high-touch, premium engagements in the market: As described, the RSVP journey has become a key touchpoint for delivering a premium and modern customer experience. By combining multiple localized entry points, such as push notifications, QR codes, and rich menus on LINE, with a fast and intuitive registration process, luxury brands can create seamless engagement that feels exclusive and effortless. From customizable reservation options to instant confirmations and quick in-store check-ins, every step is designed to reflect the brand’s commitment to service, elegance, and personalization. Ongoing digital enhancements will continue to elevate this flow, setting a new benchmark for customer-centric luxury experiences in every market. Enhanced CRM & Personalization Engines We support the centralization of customer data across online and offline channels. This allowed the brand to: Track behaviors and preferencesPersonalize content and servicesDeliver tailored communications that reflect individual tastes and needs Key takeaways – Digital Know-How Is Essential for Luxury Brands This transformation journey revealed a key truth: as luxury brands increase their digital touchpoints, the expectations for personalization grow even higher. From event invites to post-sale care, every interaction must feel intentional, elegant, and aligned with the brand’s values. That level of customization does not happen by accident. It requires the right expertise and a dedicated team to design and deliver it. Here are the essential takeaways for any luxury brand going digital: Luxury can go digital without compromising on heritage or exclusivity when done thoughtfully.Localization is essential. Using the right platforms (LINE in Japan, WeChat in China) ensures your brand fits seamlessly into your customers' digital lifestyles.Simplicity is key. Technology should streamline the experience, not complicate it.Personalization builds loyalty. The more digital touchpoints you introduce, the more important it becomes to tailor every moment to each individual.A skilled digital team is no longer optional. To meet the rising bar of luxury customer expectations, brands need expert support to design, manage, and evolve these experiences at scale. Future Prospect – A User-Centric, Seamless Digital Future Looking ahead, the most successful luxury brands will be those that embrace user-first design and seamless integration across platforms. As more customer interactions move online and age groups expand, the number of digital touchpoints is growing—and so is the need for every experience to feel highly personalized and consistent. This shift means that brands can no longer rely on generic solutions. They need dedicated teams and the right digital expertise to craft experiences that reflect their values and meet customer expectations at every step. A trusted technology partner will create more spaces for clients to focus on crafting winning business ideas. During the development process, as a solution architect, we identify the enhancement prospects that can lead to sustainable customer retention for the business. Unified loyalty programs that connect both online and in-store behaviorsCross-channel CRM systems that offer a complete, 360° view of the customer journeyOngoing innovation in digital experiences that deepen engagement By combining innovative technology with a deep understanding of their customers, luxury brands can stay both timeless in identity and timely in experience, true to their legacy while fully ready for the future. How SupremeTech Helps Luxury Brands Enhance Customer Experience We support luxury and retail clients with tailored digital transformation strategies. Our services include: Platform Strategy & Integration(LINE, Salesforce, Event Management, System Migration, Legacy Tech Upgrades)Loyalty Program IntegrationCustom solutions that connect CRM data with customer touchpoints.Digital Product & App DevelopmentFrom concept to launch, we build digital tools that enhance luxury experiences. Ready to elevate your luxury customer experience? Let’s contact us to discuss how digital transformation can help you protect your legacy while creating future-ready experiences. Development systems and technologies Below are the resources and technologies we use to develop the services: Details of entrustment: Design, Implementation, Testing, Migration, Maintenance & OperationPlatform: Line Mini App (WebApp)Development language: NextJS (React Framework), TypeScriptTeam structure: 6.5 MM x 8 months  Project Manager 0.5Project Tech Lead 0.5 Business Analyst 1.0Infra Engineer 0.5Backend Lead 0.5Backend Dev 1.0Backend Lead 0.5Backend Dev 1.0Quality Control 1.0

SupremeTech and OTTclouds will attend Vietnam ICTCOMM 2025

SupremeTech is thrilled to announce that we, alongside our OTTclouds solution, will be showcasing at Vietnam ICTCOMM 2025 in Ho Chi Minh City from June 12 to June 14, 2025. As a leading ISO-certified Agile software development company, SupremeTech aims to connect with industry pioneers and technology enthusiasts, demonstrating how FAST Channel and OTT Streaming solutions of OTTclouds can transform digital media delivery.  Attendees will have the opportunity to engage with our experts, explore a live demo of OTTclouds, and learn about our innovative approach to custom software and Agile methodologies. SupremeTech and OTTclouds at Vietnam ICTCOMM We are excited to reveal that SupremeTech and our flagship product, OTTclouds, will participate in Vietnam ICTCOMM 2025. This pivotal event is one of Southeast Asia’s premier platforms for telecommunications, IT, and communication technologies. Our presence underscores our commitment to innovation, partnership, and driving progress in the digital media landscape. Attending ICTCOMM allows us to share our vision for the future of streaming and showcase the robust capabilities of OTTclouds, which include FAST Channel and end-to-end OTT Streaming services tailored for broadcasters, media companies, content owners and enterprises. About Vietnam ICTCOMM 2025 Vietnam ICTCOMM is an international exhibition focused on products and services related to telecommunications, information technology, and communications. ICTCOMM 2025 will occur on 12-14 June at the Saigon Exhibition and Convention Center (SECC) in Ho Chi Minh City. Vietnam ICTCOMM is a strategic platform for telecommunication businesses to connect, collaborate, and promote their brands and services. The exhibition emphasizes emerging AI, IoT, 5G, cybersecurity, big data, and broadcast media trends. By bringing together government agencies, corporate executives, startups, academics, investors, and media professionals, ICTCOMM fosters valuable networking opportunities and highlights technologies shaping the future of communication. Why We’re Joining – SupremeTech’s Mission At SupremeTech, we aim to deliver secure, high-quality software solutions that drive business transformation. Founded in 2020, we have expanded to over 170 employees and worked with trusted clients across Japan, the US, and Australia. Through Agile and Scrum methodologies, we accelerate product delivery while maintaining rigorous quality control. We view ICTCOMM 2025 as an essential opportunity to forge new partnerships, exchange insights with both local and global industry leaders, and illustrate how our custom software development, OTT Streaming platforms, and HR Tech services can solve specific customer needs. Meet OTTclouds – Powering the Future of Video Streaming OTTclouds is SupremeTech’s comprehensive solution for digital media delivery, offering both FAST (Free Ad-Supported Streaming TV) channels and OTT Streaming services. Designed for broadcasters, content providers, and enterprises, OTTclouds enables: White Label OTT Streaming Applications: Launch your custom-branded OTT applications and CMS access to manage content and apps within days. Apps are available on web, iOS, Android and Android TV.FAST Channel: Create advanced HLS playout including EPG, Graphics Setup, Fallback, Ad breaks. Other advanced features include SCTE-35, Live Event Switch, Encoding, and Transcoding, among others.Monetization Flexibility: Ad-supported (AVOD) and subscription-based (SVOD), and transaction-based (TVOD) models to optimize revenue streams.Cross-Platform Compatibility: Seamless delivery across web, mobile, smart TVs, and connected devices.OTTclouds CMS: End-to-end CMS for content, user and app management, and analytics dashboards for real-time insights. Several media companies have leveraged OTTclouds to expand their audience reach, streamline content workflows, and increase engagement, demonstrating ROI through improved user retention and advertising revenue. >>> See more: User Experience in FAST vs. AVOD: A Comprehensive Comparison What to Expect at Our Booth Interactive Demos Visitors to our booth at ICTCOMM 2025 (Booth V9, Hall A) can experience live demonstrations of the OTTclouds platform. Our team will walk attendees through FAST Channel setup, OTT app configuration, and real-time analytics usage. Attendees can interact with sample dashboards and learn how to manage content libraries, schedule playlists, and optimize ad placements. Industry Insights Sharing We will share case studies from e-commerce, retail, and healthcare industries, illustrating how SupremeTech tailors solutions to meet each client’s unique requirements. Networking Opportunities Engage with our leadership team to explore partnership opportunities, joint ventures, and potential integrations. We welcome discussions with broadcasters, telecom operators, and digital media agencies eager to adopt streaming technologies. Let’s Connect! We invite all current and prospective clients, technology partners, and media professionals to visit our booth V9 at Vietnam ICTCOMM 2025. Please contact us to schedule a meeting in advance.  Whether you’re exploring enhanced streaming solutions, seeking Agile software expertise, or looking to collaborate on groundbreaking projects, our team is here to help. We look forward to meeting you at Vietnam ICTCOMM from June 12–14, 2025. Let’s unlock new possibilities together! If you are interested in attending any panel discussions or breakout sessions featuring SupremeTech representatives, we’ll share details on our social media channels leading up to the event. Follow us on LinkedIn and Facebook for the latest updates.

Uploading objects to AWS S3 with presigned URLs

I’m Quang Tran, a full-stack developer with four years of experience. I've had my fair share of struggles when it comes to uploading files to cloud storage services like Amazon S3. Not too long ago, I used to rely on the traditional method: the server would receive the file from the client, store it temporarily, and then push it to S3. What seemed like a simple task quickly became a resource-draining nightmare, and my server started to “cry out” from the overload. But then, I discovered Presigned URLs—the technique that allows clients to upload files directly to S3 without burdening the server. Presigned URLs help us solve the issues mentioned above. Today, I will show you how to implement this in SupremeTech's article. Traditional file uploading When you use applications with file upload features, such as uploading photos to social media platforms, the process is mainly done by selecting a photo from your device and sending it to the server for storage. This process started with traditional upload and has evolved over time. The steps were as follows: The user selects a photo from the device.The client sends a request to upload the photo to the server.The server receives and processes the photo, then stores it in the storage. The traditional file upload process This process may seem simple, but it can impact the server's performance. Imagine when thousands of people are uploading data at the same time, and the data size is large; your server could become overloaded. This requires you to scale your application server and ensure available network bandwidth. After identifying this issue, AWS introduced the Presigned URL feature as a solution. So, what is a Presigned URL? What is the Presigned URL? A presigned URL is a URL that you can provide to your users to grant temporary access to a specific S3 object. You can use a presigned URL to read or upload an object to S3 directly without passing it through the server. This allows an upload without requiring another party to have AWS security credentials or permissions. If an object with the same key already exists in the bucket specified in the presigned URL, Amazon S3 replaces the existing object with the uploaded object. When creating a presigned URL, you must provide the following information: Amazon S3 bucket nameAn object key (if reading this object will be in your Amazon S3 bucket, if uploading, this is the file name to be uploaded)An HTTP method (GET for reading objects or PUT for uploading)An expiration time intervalAWS credentials (AWS access key ID, AWS secret key ID) You can use the presigned URL multiple times, up to the expiration date and time. Amazon S3 grants access to the object through a pre-signed URL, which can only be generated by the bucket's owner or anyone with valid security credentials. How to upload a file to S3 using a presigned URL? Workflow for uploading a file using a presigned URL How to create a presigned URL for uploading an object? We already know what a presigned URL is, so let's explore how to create one and upload a photo through it. There are two ways to create a presigned URL for uploading, which are: Using the AWS Toolkit for Visual Studio (Windows).Using the AWS SDKs to generate a PUT presigned URL for uploading a file. In this blog, I will introduce how to use the AWS JS SDK (AWS SDK for JavaScript) to generate a PUT presigned URL for uploading a file. Using the AWS JS SDK First, you need to log in to the AWS console with an account with permission to read and write objects to S3. When you use the AWS SDKs to generate a presigned URL, the maximum expiration time is 7 days from the creation date.You need to prepare the AWS credentials (AWS access key ID, AWS secret key ID), region, S3 bucket name, and object key before uploading and securely storing them on the server. Before we start creating a presigned URL, there are a few important things to note as follows: Block all public access to the S3 bucket (crucial for data security, preventing accidental data leaks or unauthorized access to sensitive information)Never store AWS credentials in front-end code (access key ID, secret key ID)Use environment variables and secret managers to store AWS credentials securelyLimit IAM permissions (least privilege principle - AWS recommendation)Configure CORS to allow other origins to send file upload requests To create a direct image upload flow to S3, follow these steps: On the front-end, you call the API to create a presigned URL on the back-end server and send the key of the object you want to store.On the back end, you create an API to generate the pre-signed URL, as shown below, and respond to the front-end. import { PutObjectCommand, S3Client, } from '@aws-sdk/client-s3'; import { getSignedUrl } from '@aws-sdk/s3-request-presigner'; const createPresignedUrlWithClient = async ({ region, bucket, key }) => { const client = new S3Client({   region,   credentials: {     accessKeyId: 'your access key id',     secretAccessKey: 'your secret key id',   }, }); const command = new PutObjectCommand({ Bucket: bucket, Key: key }); return await getSignedUrl(client, command, { expiresIn: 36000 }); }; const presignedUrl = await createPresignedUrlWithClient({ region: 'ap-southeast-1', bucket: 'your-bucket-name', key: 'example.txt', }); The front-end receives the response and performs a PUT request to upload the file directly to the S3 bucket. <!-- wp:table --> <figure class="wp-block-table"><table><tbody><tr><td><strong>const</strong> putToPresignedUrl = (presignedUrl) =&gt; {<br>&nbsp; <strong>const</strong> data = 'Hello World!';<br>&nbsp; axios.put(presignedUrl, data);<br>};</td></tr></tbody></table></figure> <!-- /wp:table --> Object in S3 after upload Content of the object An example of a presigned URL:  https://presignedurldemo.s3.ap-southeast-1.amazonaws.com/example.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Credential=AKIAUPMYNICO4HMDKONH%2F20250101%2Fap-southeast-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20250101T021742Z&amp;X-Amz-Expires=36000&amp;X-Amz-Signature=9f29f0f34a19c9e9748eb2fc197138d4345e0124746f99ad56e27e08886fa01a&amp;X-Amz-SignedHeaders=host&amp;x-amz-checksum-crc32=AAAAAA%3D%3D&amp;x-amz-sdk-checksum-algorithm=CRC32&amp;x-id=PutObject Among them, there are query parameters that are required for S3 to determine whether the upload operation is allowed. Query parameterDescriptionX-Amz-AlgorithmThe signing algorithm used. Typically AWS4-HMAC-SHA256X-Amz-CredentialA string that includes the access key ID and the scope of the request. Format: <AccessKey>/<Date>/<Region>/s3/aws4_request. It helps AWS identify the credentials used to sign the request.X-Amz-DateThe timestamp (in UTC) when the URL was generated. Format: YYYYMMDD'T'HHMMSS'Z'.X-Amz-ExpiresThe number of seconds before the URL expires (e.g., 3600 for one hour). After this time, the URL becomes invalid.X-Amz-SignedHeadersA list of headers that are included in the signature. Commonly just host, but can include content-type, etc., if specified during signing.X-Amz-SignatureThe actual cryptographic signature ensures that the request has not been tampered with and proves that the sender has valid credentials. Now that you know how to generate a presigned URL, let's examine some limitations you should consider. Limitations of Using S3 Presigned URLs 5GB Upload Limit: 5GB per-request upload limit in S3, with no easy way to increase itURL Management Overhead: A unique URL must be generated for every upload, increasing code complexity and backend logic.Risk of Unintended Access: Anyone with the URL can upload until it expires. There's no built-in user validation.Client-Side Upload Issues: Client-side uploads can cause data inconsistency if an error occurs mid-upload. See more: Mastering AWS Lambda: An Introduction to Serverless ComputingAWS Lambda Triggers: How to Trigger a Lambda Function?Best Practices for Building Reliable AWS Lambda Functions Conclusion You have learned another way to upload objects to S3 directly without requiring public access to your S3 bucket. Please choose the method that best fits your use case. References: AWS (no date) Uploading objects - Amazon Simple Storage Service, AWS. Available at: https://docs.aws.amazon.com/AmazonS3/latest/userguide/upload-objects.html (Accessed: 19 May 2025).  AWS (no date b) Uploading objects with presigned URLs - Amazon Simple Storage Service, AWS. Available at: https://docs.aws.amazon.com/AmazonS3/latest/userguide/PresignedUrlUploadObject.html (Accessed: 19 May 2025).