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Setting Up LocalStack with Docker Compose: Emulate AWS S3, SQS, and DynamoDB Locally

By IT From Zero October 4, 2026

A comparison of 3 AWS emulation approaches for local development and a step-by-step guide to configuring LocalStack with Docker Compose for offline testing and cloud cost savings.

Virtualization

Deploying MicroVMs with Firecracker: When Virtual Machines Are Lightweight and Boot in a Flash

By IT From Zero May 9, 2026

A guide to deploying Firecracker MicroVMs on Linux—AWS's ultra-lightweight virtual machine solution. Boot in just 125ms with minimal resource consumption, ideal for Serverless.

Development

LocalStack: Simulate AWS S3, Lambda, DynamoDB Locally — Completely Free

By IT From Zero April 18, 2026

LocalStack lets you emulate AWS S3, Lambda, and DynamoDB locally using Docker, no real AWS account needed. This guide covers setup, a comparison with alternative approaches, and pytest integration for running integration tests completely offline.

Database

Database Management on AWS RDS: Hard-earned Lessons for Optimizing Performance and Cost

By IT From Zero March 31, 2026

Managing AWS RDS effectively is more than just clicking buttons. Explore real-world experiences in cost optimization with gp3, Multi-AZ configuration, and backup strategies for large systems.

Development

Introduction to Infrastructure as Code: A Guide to Automating AWS Infrastructure with Terraform

By IT From Zero March 15, 2026

After 6 months running Terraform in production, I walk through the entire journey — from realizing ClickOps was a problem, to installation, writing configs, and safely managing state files with an S3 backend. This article focuses on real-world lessons, not theory.