Understanding the concept of bastion server

As the number of EC2 instances in your AWS environment grows, so does the number of administrative access points to those instances.
A bastion is a special purpose server instance To give the controlled access to all remaining servers, that is designed to be the primary access point from the Internet and acts as a proxy to your other EC2 instances.

• Bastion Server is also known as Gateway node or Client node.
• If the number of servers is going to increase, then there are security issues.
• To resolve that issue is, give access to some servers, from there we can access the others.
• If anyone wants to access the rest of servers, needs to connect to bastion server.