If you are unable to run a LLM on your computer due to your computers' specifications or you simply want to try out a LLM that your PC can't run, then this is the place for you. Cloud Services are services that allow you to rent GPU hardware in order for you to run the aformentioned backends and LLMs needed to communicate with your character bots. They do cost a bit of money to run per hour, but it's better than nothing (aside from buying yourself said hardware).
Here are a few cloud services that you can use to run LLMs, and how to use them exactly.