Creating multiple domains at one time
It is possible to create multiple domains within in a single service programmatically, using Fastly's API. Before you add domains, however, consider that it may be easier to serve multiple domains through custom VCL. You'll be able to finely tune requests in this manner, yet remain flexible enough that you'll be able to implement as many processes as needed.
Are there domain creation limits?
We set a limit on the number of domains you can create per service by default. However, if you email email@example.com, we may be able to adjust this number for you by working with you to set up and fine-tune domain handling in your service.