Ideally you offer developers both a relational data store and a fast key-value data store. Train your developers to understand the pros and cons and then step b

Ideally you offer developers both a relational data store and a fast key-value data store. Train your developers to understand the pros and cons and then step back. There’s nothing inherently wrong with a big db instance. The cloud providers have fantastic automation around multi-az masters, read replicas and failover. They even do cross region or cross account replication. That being said. Multi PB would raise an eyebrow.