We discussed this in our engineering meeting yesterday and concluded that we have two types of logs currently, and a future third.

1. Django logs - these are retained based on deployments, being cleared out when we deploy new code. This currently happens on a regular basis but is variable. Old Django volumes/containers are deleted every week.
   1. We've never needed to go back further than a week in these logs, since they're usually used to fix immediate problems.
2. Requests module. We think these logs might only have been used for pageview data, which we don't think we need anymore (T272575). We've never used this for development purposes and currently drop the data manually on a periodic basis.
3. Matomo logs. This is configurable in Matomo.