Continuous Delivery means you ensure every change can be deployed to production. Continuous Deployment means you deploy every change.
If someone says their code was broken for a couple of days while they are refactoring, you can be pretty sure they were not refactoring
posted: the monolith-first strategy to building microservices (or not) martinfowler.com/bliki/Monolith…
It may be hard to scale a poorly designed but successful software system, but that's still a better place to be than its inverse.