Cloud Network Security (VPCs, Security Groups)

Summary

Applying Phase 2's networking fundamentals in a cloud-specific context — VPCs isolate your resources, and security groups/network ACLs control traffic in and out at a granular level.

• 1Design a basic VPC with public and private subnets for a hypothetical application.
• 2Configure security groups to allow only necessary traffic to each resource.
• 3Learn why sensitive resources (like databases) belong in private subnets, not public-facing ones.