Relational Database Service (RDS)
This is one of the most commonly featured topics in AWS exams. You should have sufficient knowledge prior to the exam. In this section, you will learn about Amazon’s RDS.
AWS provides several relational databases as a service to its users. Users can run their desired database on EC2 instances, too. The biggest drawback is that the instance is only available in one Availability Zone in a Region. The EC2 instance has to be administered and monitored to avoid any kind of failure. Custom scripts will be required to maintain a data backup over time. Any database major or minor version update would result in downtime. Database instances running on an EC2 instance cannot be easily scaled if the load increases on the database as replication is not an easy task.
RDS provides managed database instances that can themselves hold one or more databases. Imagine a database server running on an EC2 instance that you do not have to manage or maintain....
