Zero downtime deployments in the cloud era are the new standard. And while everybody starts to understand the importance of rolling, blue/green and canary deployments, the impact on your data is often overlooked. Where updating your application server is relatively simple, especially using container technology, making sure your persistence model can cope with all these changes in your application can be a lot harder. Your persistence model needs to be able to cope with upgrades, downgrades and potentially with multiple versions of the same application at once. Based on our own experience we show you how you can deal with data (migrations) both with single data backends and polyglot persistence.