We run our own MySQL and Redis on an Ec2 instance. Originally it was due to cost -- you essentially are charged by instance when using these services and we cou

We run our own MySQL and Redis on an Ec2 instance. Originally it was due to cost -- you essentially are charged by instance when using these services and we could run them both from a single instance. Today, it's really due to not wanting or needing to do the migration. I will add, we've paid when we've had to do several manual db upgrades in that time: - Original m3.medium on non-provisioned iops - Upgrade m4.large - Upgrade to an EBS with provisioned iops - Upgrade to m4.xlarge These are easy enough, but not nearly as easy as an RDS upgrade is.