Both GE and AMMEX used "10 weeks to launch" as a milestone, and neither waited for a 100% complete system before going live. GE explicitly used an MVP (Minimum Viable Product) approach—building core functionality first: keyword search, inventory lookup, inquiry, and ordering, letting buyers complete the most critical workflows while remaining features rolled out gradually. This approach surfaces real-world issues during actual use rather than after extended internal testing. Real implementation timelines for B2B depend heavily on data readiness, process complexity, and internal decision speed, but the direction is clear: define the core scenarios for phase one, launch early, run, and iterate—it's more pragmatic than waiting for "perfect."