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April 2026

5 Hands-On AWS Projects That Will Prepare You for the SAA-C03
Most people study for the AWS Solutions Architect Associate by watching 40 hours of video and memorizing answers.
 • Lefteris Karageorgiou
Building Production-Grade API Security
We built a customer-facing API processing thousands of transactions per minute.
 • Lefteris Karageorgiou
Tracing Serverless Applications with AWS X-Ray
In the world of serverless architectures, understanding how requests flow through your distributed system can feel like navigating a maze blindfolded.
 • Lefteris Karageorgiou
API Gateway Canary Deployments: A Strategic Approach to Safe Releases
Canary deployments are one of the most powerful risk mitigation strategies available to cloud engineers working with AWS API Gateway and Lambda.
 • Lefteris Karageorgiou
Multi-Region Serverless Architectures: Building Global Resilience with AWS
Building applications that serve users across the globe requires more than just deploying to a single region.
 • Lefteris Karageorgiou

March 2026

A Beginner’s Guide to Testing Serverless Applications
Testing Serverless Applications: A Comprehensive Guide
 • Lefteris Karageorgiou
AWS Lambda Durable Functions: What They Are and When to Use Them
AWS Lambda Durable Functions represent a significant evolution in serverless application development, introduced at AWS re:Invent 2025.
 • Lefteris Karageorgiou
Accelerating CloudFormation and CDK Development with Kiro
If you’ve spent any meaningful time building on AWS, you know the drill: you open your IDE, stare at a blank CDK stack or an empty CloudFormation…
 • Lefteris Karageorgiou
When NOT to Go Serverless: 5 Use Cases Where It’s the Wrong Choice
Serverless is one of the most transformative paradigms in cloud computing.
 • Lefteris Karageorgiou
© 2026 Lefteris Karageorgiou · Privacy ∙ Terms ∙ Collection notice
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