You stock critical spares because when a pump fails at 2 a.m. you can't wait for next-day shipping — but tracking them is the hard part. Parts get used and no one updates the spreadsheet; reorder time means walking the shelf to count. LRMS deducts parts automatically when a work order closes, fires low-stock alerts at your thresholds, and flows every material cost through to the asset.
Every module talks to every other. Start small, grow into the rest.