We've discussed a lot of advantages that the microservice architecture has over a monolith, but migrating is a massive undertaking that should not be underestimated.
Systems get started as monoliths, as it is simpler and allows for quicker iteration in a small code base. In any new company, pivoting and changing the code, searching for a successful business model is critical. This takes preference over clear structures and architecture separations—it is the way it should be.
However, once the system matures, the company grows. As more and more developers get involved, the advantages of a monolith start to become less evident, and the need for long-term strategy and structure becomes more important. More structure doesn't necessarily mean moving toward a microservice architecture. A great deal can be achieved with a well-architected monolith...