[phodge]

"Monolith or Microservices" and "Monorepo vs Polyrepo" are best treated as two entirely separate engineering questions. You can have a Monolith built from code in many repos, or many microservices maintained in one big repo.

There are various pros+cons for whichever combination you choose, there's no "best" answer that applies to every single situation.

[john-tells-all]

Seconded.

In a job we were mostly Serverless/Microservices, but tested and deployed as a Monolith. We got many benefits from the Monolith (simplified management, testing, code wrangling), and some benefits of Microservices (theoretically independent functions, scaling/costing down to zero).