how to release the elastic ip ?

Releasing the Elastic IP we have to go Elastic IP =>select Elastic IP => Actions => Release Elastic ip addresses

explain subnet ?

Subnet means it divides the larger network into multiple smaller networks, Each subnet operates as an independent network, allowing for more efficient routing and management of network traffic.

explain route table ?

Each VPC has a route table, it has all route information like allowed private/public subnets how to communicate with in the VPC.

explain vpc peering ?

VPC peering allows to communicate two different VPC's enables secure and direct communication between two Virtual Private Clouds (VPCs). This connection allows resources in the peered VPCs to interact with each other as if they were within the same network, using private IP addresses.

what is transit gateway attachment?

Select transit gateway attachment => create transit gateway attachment => give name , select Transit gateway ID => VPC ID for this attachment => create tgw attachment