We are still using development environments and we are looking to soft launch in small scale after the Summer. Can the development environment handle a few thousand CCU or should we already move to production? We use metaplay servers only for meta features and matchmaking.

It's not exactly trivial to say because resource consumption depends a lot on the nature of the game and how you've implemented it, so there's a lot of variance. Running representative bot clients and profiling the resource use for the game server would be the first step towards understanding what a few thousand CCUs would from a server resource standpoint look like. More than that, though, running any type of important deployment on development environments is often a risky idea. Development environments are run on multi-tenant databases (so you cannot, for example, roll back databases as it would affect other tenants as well), the compute is sourced as burstable spot instances, so they are not fit for running long-term sustained loads, and so on. All in all, we do suggest going for the production environments as this gives us also more options and flexibility to work with you to do capacity planning and figure out the specifics of what your environment should look like.

Thanks for the quick answer. We'll go with the production environment