Datacenter is used to host server racks that you add to it. It is highly scalable and makes computing more affordable. Each added server rack provides computing. It is worth noting that each server rack has its power, cooling, and maintenance demands. However, some people say that all it does is to persist and search in a vast collection of pictures of cats and memes - we were not able to debunk this.
You can chose what ports to prioritize. If you enable output prioritization, all products from any input will be first attempted to output via the prioritized port. If that port cannot accept any more products, the other non-prioritized port will be used. Input prioritization works in a similar way.
Animals housed in this farm. You can obtain new animals by trading with a world village. Once there are some animals they will start naturally increase in number. Animals need to be provided with food and water otherwise they can perish.