I work at AWS Professional Services, people move around among AWS ProServe, Google/GCP, and Microsoft/Azure all of the time.
Heck plenty of people come into ProServe with no AWS experience. But they know their areas of specialty well and it only takes a couple of months to use AWS specific services.
Heck plenty of people come into ProServe with no AWS experience. But they know their areas of specialty well and it only takes a couple of months to use AWS specific services.