Is there a risk of data loss?

No. Yamdu is a cloud application, which stores all your data geo-redundantly replicated in multiple data centers. This way we can assure, that our databases are available at any time. Even if on data center broke down, our users would not notice that, as data would simply be served from another server. This is a huge advantage over physically storing data your own: The risks of losing data in a fire or water accident at your office or due to a hard drive incident are several times higher.