Implementation, End to End
Implementation is where software succeeds or quietly dies. I've run the full cycle hundreds of times — as the person who couldn't hand it off.
The stages, as I actually practice them
Discovery is listening until you can describe the customer's workflow better than they can — then writing it down so both sides are bound by the same truth. Configuration turns that document into the system, resisting the temptation to customize what should be standardized. Data migration is the stage that kills implementations: I script imports, validate against source, hunt duplicates, and reconcile counts before anyone goes live — because "we'll fix the data later" means never. Testing/UAT is done with the customer's real people and real scenarios. Training meets users where they are: a dispenser gets a different session than an administrator (1,000+ users trained this way). Go-live is scheduled for survivable failure, staffed for the first day's panic, and followed — not abandoned. Support then carries the relationship for a decade.
Details that separate good from adequate
Documentation written per audience, not per module. A named list of every interdependent task with an owner and a date — kept ruthlessly current. The discipline of confirming resolution with the user rather than closing the ticket at the fix. And renewal treated as the metric that judges all of it.