Two of my ex-colleagues at Trustbit, Christian Folie and Daniel Weller, gave a presentation at the kanDDDinsky 2022 Conference in Berlin about a SaaS product we built that integrated with over 300 GPS Providers from across Europe to aggregate GPS data for a large European transport organisation. They tell the story of how we used Domain-Driven Design, Functional Programming in F#, and agile practices to help evolve the system over time, the mistakes we made along the way, and the lessons that we learned.

https://www.youtube.com/watch?v=MmruAS3B3D0

The video is from the KanDDDinsky Conference 2022 in Berlin (Oct 31 to Nov 2, 2022).