VPC Basics – Subnets, Route Tables, IGWs, NAT, Security Groups

90 Days of Cloud Challenge: Day 5

By Sandip Das · · 9 min read

VPC Basics – Subnets, Route Tables, IGWs, NAT, Security Groups
💡
Hey — It's Sandip Das 👋

We should learn VPC fundamentals like subnets, route tables, IGWs, NAT, and security groups because they form the backbone of secure, scalable, and highly available cloud networking.

Mastering these ensures you can design, control, and troubleshoot traffic flow between services, the internet, and private resources in production environments.

📚 Key Learnings

  • Understand what a Virtual Private Cloud (VPC) is and why it’s the foundation of AWS networking.
  • Learn about subnets (public vs private) and how they isolate resources.
  • Explore Route Tables to control traffic flow inside and outside the VPC.
  • Learn about Internet Gateway (IGW) for outbound internet connectivity.
  • Understand NAT Gateway/Instance for private subnet internet access.
  • Master Security Groups and Network ACLs for traffic filtering.

Read the full article on learnxops.com.

Topics: AWS EBS, AWS S3, Community, AWS, 90 Days of Cloud