As of right now I'm a bit lost on what SQL is. From my understanding, it's programming to manage data on a mass scale.

That being said, AWS has two main Types. (NoSQL Database services & Relational Database Services). The most popular NoSQL database Service would be (Dynamo DB), it uses a Key/ Value and document database. The reason it's so popular is do to its cost-effectiveness, scalability, and speed when retrieving data. (DocumentDB) is an Open source of NoSQL popular with Developers.

Relational Database or RDS is a service that supports multiple SQL's. It is the most popular amoung tech companies and start ups. RDS also supports several different engines.

(Just a reminder, feel free to correct any misinformation or add to it. I am learning from scratch. Any tips or corrections is accepted.)