[drra]

It all boils down to unmanaged technical debt that can have many forms - code, standards, architecture, documentation, tooling, compliance. There are two major indicators of tech debt - slow development pace and high amount of unexpected bugs/problems. Big projects have big capacities for such debt so it's visibility is also higher. Replacing "legacy" solution with a shiny new thing is declaring bankruptcy and starting fresh - it does not change the cause of poor tech debt management.