The Cloud Engineers

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.

Apr 8 • Lefteris Karageorgiou

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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.

Apr 1 • Lefteris Karageorgiou

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March 2026

A Beginner’s Guide to Testing Serverless Applications

Testing Serverless Applications: A Comprehensive Guide

Mar 25 • Lefteris Karageorgiou

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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.

Mar 18 • Lefteris Karageorgiou

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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…

Mar 11 • Lefteris Karageorgiou

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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.

Mar 4 • Lefteris Karageorgiou

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February 2026

Securing Your AWS Account in the First 24 Hours (A Checklist)

You just created a new AWS account.

Feb 25 • Lefteris Karageorgiou

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SQL or NoSQL on AWS? A Practical Decision Framework for Cloud Engineers

Choosing the right database is one of the most impactful architectural decisions you’ll make on AWS.

Feb 18 • Lefteris Karageorgiou

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AWS Networking 101: Everything You Need to Know About VPCs

If you’re starting your AWS journey, you’ve probably heard about VPC (Virtual Private Cloud) and wondered what all the fuss is about.

Feb 11 • Lefteris Karageorgiou

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Building a Containerized Application with ECS and Fargate

Running containers in production can feel overwhelming when you first approach AWS.

Feb 4 • Lefteris Karageorgiou

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January 2026

Serverless patterns for managing AWS Lambda at scale (from my re:Invent 2025 talk)

As serverless applications scale, managing hundreds of AWS Lambda functions becomes increasingly complex.

Jan 28 • Lefteris Karageorgiou

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Serverless Contact Form with API Gateway, Lambda, and SES: A Complete Guide

Static sites have become incredibly popular for portfolios, landing pages, and business websites.

Jan 21 • Lefteris Karageorgiou

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