"Mostly-isolated development environment" is more important here than "external services", IMO. I've been at organizations where local development required con

"Mostly-isolated development environment" is more important here than "external services", IMO. I've been at organizations where local development required connecting to a MSSQL instance in a server closet at HQ; This is unacceptable, and devs will constantly be at war with each other. Mocking your analytics provider (or whatever) seems much less problematic to me.