Day 8: Test your network (prove it works)

How to validate your VPC infrastructure by launching a test instance and verifying connectivity
Trust, but verify
Days 3-7: You built the entire network infrastructure
Today: We prove it actually works
Here's the situation:
You've built:
✅ VPC with Internet Gateway
✅ Public and private subnets
✅ NAT Gateway
✅ Route Tables
✅ Security Groups
But you haven't actually tested any of it.
What if:
- NAT Gateway isn't running correctly?
- Route tables have the wrong associations?
- Secure Groups are blocking traffic?
- Something is misconfigured?
You'd fund out after deploying your containers (painful debugging)
Solution: Test first, deploy second.







