That's an excellent question.
When you're pulling data together, you want to have one source. The problem is if you have multiple.... For instance, suppose you implement multiple contact tracing solutions, and you're pulling data into multiple databases. When you're asked a question, you could get three answers, right? It's okay to have multiple solutions. You just want to make sure that the data at a provincial level is coming in and it is a single source of truth.
From that, you can then do systems of insight. You can build predictive modelling tools, but at least you have the confidence that the data you have is in one single place.