Re-purchasing an application is seen as the top of craftsmanship for cloud migrations. But people have rarely seen such a project in practice. This is the courageous journey of a real consumer product running on expensive infrastructure for years with 2 million active users and more than 6PB of data.

The talk takes you on a journey to a German public cloud and shares all the learnings - about shifting massive data, about terraforming infrastructures, about customizing open source and about all it takes to launch and stay in business.

Target Audience: IT people with no fear of few technical details
Prerequisites: Curiosity about a real public cloud modernisation approach
Level: Advanced

Extended Abstract:
The journey will have the following stages:

Stage 1: How architecture for such a quest looks like and how to start?
Three architecture goals will drive the rest of the journey:
- Efficient scaling
- Minimal run efforts
- Release robust customisation

Stage 2: Customisation of an Open Source product

Stage 3: Migration - decisions and actual experiences during migration

Stage 4: Rollout and staying alive