The Cloud Engineers

The Cloud Engineers

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The Cloud Engineers in 2025 - Year in Review
My passion for helping professionals level up their cloud skills drove me to start this newsletter in early 2025.
 • Lefteris Karageorgiou
5 Lambda Cost Mistakes I See Teams Make (And How to Fix Them)
Lambda’s pay-per-use model sounds simple: you pay for what you use.
 • Lefteris Karageorgiou
How Much Do Cloud Engineers Really Make? A Breakdown by Role and Experience
Cloud computing has revolutionized how businesses operate, and with it, the demand for skilled cloud professionals has skyrocketed.
 • Lefteris Karageorgiou
Building a Data Lake with S3: Architecture and Design Principles
Amazon S3 has become the de facto foundation for data lakes on AWS, and for good reason.
 • Lefteris Karageorgiou
How to Nail Your Cloud Engineering Interview with the STAR Method
If you’re preparing for a Cloud Engineering interview, you’ve likely heard about the STAR method.
 • Lefteris Karageorgiou

November 2025

5 Things You Didn't Know Amazon DynamoDB Could Do
When most people think of DynamoDB, they think “fast NoSQL database” and stop there.
 • Lefteris Karageorgiou
Build Your First Serverless API in 10 Minutes with AWS SAM
Serverless computing has revolutionized how we build and deploy applications.
 • Lefteris Karageorgiou
AWS Budgets for Beginners: How to Monitor Your Cloud Spending and Avoid Overages
One of the most common concerns when working with AWS is unexpectedly high bills.
 • Lefteris Karageorgiou
Idempotency Patterns for Serverless Applications
If you’re building serverless applications on AWS, there’s a harsh reality you need to accept: duplicate events will happen. It’s not a matter of if…
 • Lefteris Karageorgiou

October 2025

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