SQL AG Backup Strategy

Has anyone used RR to backup a SQL AG and if so what was the strategy?

We have several large SQL DB's (10TB) that run on three node AG's and are looking for a good solution for backup and recovery but nothing seems great and most all require human DBA intervention (dump and sweep). I have used RR on single node small SQL DB's and it worked well but nothing like this scale.

These are production DB's with high transaction rates.