AWS, JavaScript, React - Deploy Web Apps on the Cloud - Deploying an EC2 Instance (Continued)

The video tutorial explains the importance of security groups in AWS for securing instances through a firewall. It covers the steps to create a new security group, configure SSH and HTTP rules, and the significance of using a key pair for secure SSH access. The tutorial also demonstrates how to launch an instance and monitor its status, emphasizing best practices for security configurations.

What is a key pair, and why is it necessary for SSH access?

Describe the process of downloading and storing a PEM file.

What should you do to ensure the security of your key pair file?