Either the site is in elastic beanstalk or on single, standalone webservers. EB code can be found in git for factcheck.org, appc.org and annenbergclassroom.org. All other servers are in us-west-2 and backed up 2x daily, now using Lifecycle Manager.
Currently LM backs up all non-EB sites, including flack, crn, ymr, fct, gitlab and acg. We keep 64 snapshots for a max age of 1.1 months. https://us-west-2.console.aws.amazon.com/ec2/v2/home?region=us-west-2#Lifecycle:sort=PolicyId
We still maintain two db servers. They are backed up once daily with a retention period of 14 days (us-west-2) and 30 days (us-east-1).