AI & ML
What Is Amazon S3 Vectors? Use Cases, When to Use It, and Cost
Amazon S3 Vectors is AWS’s managed service for storing and searching vector embeddings inside the S3 ecosystem. In simple terms, it gives…
CDChameera Dulanga · · 8 min read
Engineering dispatches from the AWS stack
Featured story
44 articles · Updated 27 August 2026
Security
Why IAM Policy Size Breaks an AWS Deployment?
Why IAM Policy Size Breaks an AWS Deployment? Your Lambda’s permissions didn’t get more dangerous. They got too long to write down. Everything was working. The application was growing, new …
Maleesha Nuwanthi Kolombage · · 5 min read
Security
Authentication vs Authorization in AWS Amplify
Authentication vs Authorization in AWS Amplify Why Permissions Feel Confusing in Amplify When you first start using AWS Amplify, authentication often feels simple. You add Auth, sign-up works …
Rashindu Sithara · · 6 min read
Architecture
PDFs Generate with Puppeteer and Amazon S3
PDFs Generate with Puppeteer and Amazon S3 Learn how to use Puppeteer with Amazon S3 Bucket to generate PDFs, screenshots, and store files securely in AWS. Many teams need a simple way to generate …
Pathum Jayaweera · · 6 min read
How real AWS systems are put together: the trade-offs, the diagrams, and what broke in production.
Architecture
What Is Amazon EC2? A Beginner’s Guide to Virtual Servers in AWS
What Is Amazon EC2? A Beginner’s Guide to Virtual Servers in AWS Amazon EC2 (Elastic Compute Cloud) is a service that provides virtual servers, called instances, in the cloud. You can choose the …
Avishka Weeraddana · · 4 min read
Architecture
Core AWS Services You Must Know as a Developer
Core AWS Services You Must Know as a Developer AWS looks exciting from a distance. Then you open the console for the first time and see a long list of services, categories, and unfamiliar names. EC2 …
Binara Prabhanga · · 7 min read
Architecture
AWS Fullstack — Submission & Writer Guidelines
AWS Fullstack — Submission & Writer Guidelines Welcome to the AWS Fullstack Medium publication! These guidelines will help you understand what kind of content we publish, how to format submissions …
Chameera Dulanga · · 2 min read
Architecture
How to Reduce AWS Cost with Spot Instances
How to Reduce AWS Cost with Spot Instances AWS EC2 Purchasing Options and When to Use Them AWS EC2 is one of the most used could services around the world. However, most new developers aren’t aware …
Chameera Dulanga · · 5 min read
Lambda, API Gateway, Step Functions and EventBridge, from cold starts to event-driven design.
Serverless
Trigger AWS Workflows from Incoming Emails Using Amazon SES
Trigger AWS Workflows from Incoming Emails Using Amazon SES Ever wanted to trigger a workflow based on an email sent to a specific recipient address? That’s exactly what we’re going to discuss …
Manoj Fernando · · 5 min read
Serverless
Common Challenges of using Lambda Layers
Common Challenges of using Lambda Layers What are the Real-World Challenges of using AWS Lambda Layers and How to Fix Them? AWS Lambda Layers sound like a clean solution when you first hear about …
Pathum Jayaweera · · 8 min read
Serverless
Handlebars with AWS Lambda Layers
Handlebars with AWS Lambda Layers A Practical Way to Manage Reusable Templates in Serverless Apps When you first start using Handlebars in AWS Lambda, everything feels simple. You write a template …
Pathum Jayaweera · · 9 min read
Serverless
How to Use Lambda Layers with Amplify
How to Use Lambda Layers with Amplify Why AWS Lambda Layers Become Essential as Your Serverless App Grows When you first start using AWS Lambda, everything feels clean and simple. You write a …
Maleesha Nuwanthi Kolombage · · 3 min read
DynamoDB, Aurora, S3 and the analytics stack: modelling, querying and moving data at scale.
Data
AWS DynamoDB Eventual Consistency VS Strong Consistency
AWS DynamoDB Eventual Consistency VS Strong Consistency Amazon DynamoDB reads data from tables, local secondary indexes (LSIs), global secondary indexes (GSIs), and streams. Both tables and LSIs …
Maleesha Nuwanthi Kolombage · · 3 min read
Data
Amazon S3 Account Regional Namespaces
Amazon S3 Account Regional Namespaces Simplifying S3 Bucket Naming Across AWS Regions Cloud storage is at the heart of modern applications, and Amazon S3 (Simple Storage Service) has long been one of …
Maleesha Nuwanthi Kolombage · · 2 min read
Data
GSI vs LSI in DynamoDB
GSI vs LSI in DynamoDB Difference between GSI and LSI in DynamoDB When you start learning DynamoDB, one thing becomes clear very quickly: how you design your keys decides how well your table works …
Yugeesha Gomes · · 5 min read
Data
Choosing the Right AWS Database: SQL vs NoSQL in the Cloud (RDS vs Aurora vs DynamoDB)
Choosing the Right AWS Database: SQL vs NoSQL in the Cloud (RDS vs Aurora vs DynamoDB) When you create a app , At first it’s simple: one app, one database. Then the system grows: a background …
Bhathiya Ranasinghe · · 4 min read
Bedrock, SageMaker and Amazon Q: shipping models and agents on AWS without the hand-waving.
AI & ML
Amazon Bedrock AgentCore Explained for Developers
Amazon Bedrock AgentCore Explained for Developers What is Amazon Bedrock AgentCore? Most AI agent demos look strong for five minutes. Then the hard questions show up. Where does the agent run? How …
Binara Prabhanga · · 6 min read
AI & ML
Prompt Injection in AI-Powered Applications
Prompt Injection in AI-Powered Applications How to Test Against Prompt Injection in AI-Powered Applications? Introduction Every AI system operates on instructions. But what happens when someone slips …
Navindu · · 8 min read
AI & ML
How to Build a RAG Knowledge Base with Amazon S3 Vectors and Amazon Bedrock
How to Build a RAG Knowledge Base with Amazon S3 Vectors and Amazon Bedrock Amazon Bedrock Knowledge Bases Explained: How Managed RAG Works on AWS Building AI for a business is not just about picking …
Chameera Dulanga · · 9 min read
AI & ML
How I Built a Full-Stack Application Using Kiro, Kiro Powers, and MCP Servers
How I Built a Full-Stack Application Using Kiro, Kiro Powers, and MCP Servers A Chrome Extension Backed by an AWS Serverless Architecture As a Solutions Architect, one of my day-to-day tasks is …
Manoj Fernando · · 9 min read
Automating Docker Image Deployment to AWS ECR with GitHub Actions
Avishka Weeraddana · 29 April 2026
AWS ECR for Beginners: How to Store and Manage Docker Images in AWS
Avishka Weeraddana · 20 April 2026
How to Expose Internal Applications Securely Using AWS Verified Access (No VPN Required)
Manoj Fernando · 13 April 2026
AWS Amplify vs AWS CDK: What Are You Really Choosing?
Bhathiya Ranasinghe · 10 April 2026
Getting Started with Handlebars
Pathum Jayaweera · 20 March 2026
What is AWS Amplify?
Rashindu Sithara · 13 March 2026
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