My definition is pretty straightforward: legacy is every system of which maintainers don't have complete knowledge. Also legacy is a spectrum: there is a diffe

My definition is pretty straightforward: legacy is every system of which maintainers don't have complete knowledge. Also legacy is a spectrum: there is a difference between that side project you coded 2 months ago and forgot about, and that mysterious cobol mainframe the bank found when reworking the office to open floor.