Hello Sune,
Man, good question! I honestly have not seen that service before and it’s tough for me to tell how the API would integrate with The Events Calendar right out of the gate. That doesn’t mean it couldn’t work, I just haven’t played around with it to know if it is indeed possible.
I will say that we have a method to import events, venues and organizers using a CSV file. Not sure if that’s what you’re looking for as far as migration goes, but it is one method to consider.
Let me know of you have any follow-up questions here and I’d be happy to help as best I can. 🙂
Geoff