Why Do Software Projects Slow Down Over Time

Software projects slow down because complexity accumulates faster than teams can manage it. Every feature adds code. Every integration adds dependencies. Every team adds communication paths. Nothing gets removed.

The result is the Sync Tax. A feature that would take a week in a clean system takes a month because you need to update three other modules, coordinate across two teams, and test for regressions in five unrelated areas. The team isn't slower. The system is.

The fix isn't hiring more engineers. That makes it worse because coordination overhead grows faster than headcount. The fix is modularization. Create clear boundaries so teams can work independently.