> Is there a good reason for this that people without experience at FAANG orgs can't grasp?
I think yes. It's about the scale of teams working on different parts of the products.
Its not like one team runs a DB where all other teams all put their data into. So multiple team make their own choice of DB to use for their own use cases, and with their own preferences and reasons. So as a whole, Netflix or other FAANGS can grow to use many DB, many languages, many frameworks, etc.
I think yes. It's about the scale of teams working on different parts of the products.
Its not like one team runs a DB where all other teams all put their data into. So multiple team make their own choice of DB to use for their own use cases, and with their own preferences and reasons. So as a whole, Netflix or other FAANGS can grow to use many DB, many languages, many frameworks, etc.