More detail
A VPC has at most one internet gateway. Traffic between the internet and anything with a public IP in the VPC passes through it, in both directions. AWS runs it for you and it scales by itself.
Internet gateway
The VPC's door to the public internet.
Think of it as: The estate's front gate.
What to know for Level 0
- A VPC has at most one internet gateway. AWS runs it and scales it for you.