Security groups act as virtual firewalls to control traffic to and from EC2 instances.

Subnets must always be public for an application to work in AWS.

Decoupling the architecture in Phase 3 helps in better fault tolerance.

Why is an internet gateway required in the virtual network setup?

What security group rule allows database connections in Phase 2?

In Phase 3, the database is deployed in a public subnet.

In Phase 3, what type of database instance is created in RDS?

In Phase 3, what is the purpose of decoupling the architecture?

Amazon EC2 instances require a public IP address to be accessible from the internet.

What is the primary purpose of creating a virtual network in Phase 2?