If you are going to use Athena don't forget to setup a limit to your queries. It's not enabled by default and remember you pay by amount of data scanned.

"Setting data usage control limits" - https://docs.aws.amazon.com/athena/latest/ug/workgroups-sett...

Also make sure your follow the best practices. Again...Lots of money to be saved or wasted...Depending on how well you follow them.

"Top 10 Performance Tuning Tips for Amazon Athena" - https://aws.amazon.com/blogs/big-data/top-10-performance-tun...