Correct answer - "EC2" : Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides
secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud
computing easier for developers. These virtual machines in the cloud are called 'instances'.
Incorrect:
"RDS" - RDS is a managed service that makes it easy to set up, operate, and scale which does not
allow you to install software
"ElastiCache " - Amazon ElastiCache improves the performance of web applications by allowing you
to retrieve information from a fast, managed, in-memory system, instead of relying entirely on
slower disk-based databases
"DynamoDB" - DynamoDB takes away one of the main stumbling blocks of scaling databases: the
management of database software and the provisioning of the hardware needed to run it.