Centralized: Decisions are taken at the most senior or central level.
Decentralized: Decisions are taken at some level lower than the most senior; typically by individual work units within the organization or even by individual staff. The latter may also be referred to as end-user computing, where the individuals within the public sector who make use of outputs from e-government systems (the internal end users) also those who operate and/or develop and/or manage those systems.
Hybrid: Decision are taken at both senior and lower levels, either separately or in an integrated manner. This approach is called federal or federated in some governments