Monolith-First - are you sure?

The modular monolith architecture, though often advocated for its simplicity and ability to defer distributed system complexities, comes with inherent challenges. Boundaries between modules can erode, leading to tightly coupled systems that are hard to maintain and scale. Additionally, deployment, resource management, and tooling maturity can be significant hurdles. To avoid creating a ‘big ball of mud,’ one should consider modular-first principles and plan thoroughly for data isolation, module boundaries, and consistent DevOps processes.