Terraform is an open-source Infrastructure as Code (IaC) tool by HashiCorp that lets you define and provision cloud infrastructure using a declarative configuration language. This guide explains what Terraform is, why it matters, and how to get started managing infrastructure across AWS, Azure, and Google Cloud.
Amazon Web Services (AWS) is the world's most comprehensive cloud platform, offering over 200 services from data centers globally. This beginner's guide introduces the most important AWS services and concepts — from EC2 and S3 to IAM and VPC — giving you a solid foundation for cloud development.
AWS Security Groups and Network ACLs (Access Control Lists) are both used to control network traffic in Amazon VPCs, but they work at different layers and have distinct behaviors. Understanding their differences is essential for designing secure, well-architected AWS infrastructure.