• VPC’s are regionally resilient
• min CIDR -> /28 -> 16 IP addresses
• Max CIDR -> /16 -> 65 536 IP addresses

Default VPC

• One Default VPC per region. Can be deleted
• CIDR range always the same: 172.31.0.0/16
• There’s one subnet per Availability Zone in a region. Virginia has 6, while Cape Town has 3.

Custom VPC

• By default, these are isolated & private

Some VPC components

• Internet Gateways
• Route tables
• NACL
• Security Groups