Implementation
The project that takes a Dynamics 365 product from purchase to production use — typically led by a Microsoft partner.
An implementation is the project that takes Dynamics 365 from a licensed but empty tenant to a working production system. A typical implementation covers requirements analysis, fit-gap analysis against the standard product, configuration, custom development (AL extensions for Business Central, plugins or Power Platform for CRM), data migration from legacy systems, integration to other applications, user training, testing, and cutover to go-live. Implementations are almost always delivered by a Microsoft partner using a structured methodology — Microsoft's official guidance is Success by Design — and run anywhere from a few weeks for a small Business Central project to multi-year programmes for large Finance/SCM rollouts.