[Kiele]

That situation is pretty common. In my experience, the biggest headaches come from mismatched data formats, unclear service boundaries, and assumptions baked into older code. One project I worked on had tight coupling everywhere, so adding a new service meant touching multiple components. We eventually had to slow down and clean up interfaces before moving on. Reading through backend approaches on https://agileengine.com/backend/ helped us frame integrations around scalability and isolation, rather than quick fixes. It reinforced the idea that integration work is as much about structure and planning as it is about writing code.