The four most widely used implementation models are
- Big Bang – The e-Governance project is launched across the locations for all the functions at the same time. All users move to the new system on a given date.
- Phased rollout – Changeover occurs in phases over an extended period of time. Users move onto new system in a phased manner.
- Parallel adoption – Both the legacy and new system run at the same time. Users learn the new system while working on the old.
- Pilot and rollout – A small (sample) part of the project is implemented for testing purposes before the complete project rollout is done.
