deployedimplementedcommissioned

Deployed, implemented, and commissioned describe a sequence of stages in the lifecycle of a project, system, or facility. While the terms are used across industries such as information technology, engineering, and public works, they refer to distinct activities that often overlap in practice. Understanding the differences helps clarify responsibilities, timelines, and expectations.

Deployed refers to making a system, service, or capability available for use in a production environment or in the field. Deployment involves installation, configuration, distribution, and release management to ensure users can access the solution. In software, deployment means pushing code to production and enabling user access; in infrastructure or equipment, it means placing devices in the intended locations and connecting them to necessary networks and services.

Implemented describes the execution of planned solutions and features. It signifies that design specifications, requirements, and workflows have been translated into working components, often through development, integration, and testing. Implementation emphasizes the functional realization of the project, including code development, system integration, and validation against criteria, regardless of whether the system is yet fully in use.

Commissioned denotes formal acceptance and readiness for operation. This stage typically involves verification against performance criteria, safety and regulatory compliance, training for users or operators, documentation handover, and sign-off by stakeholders. Commissioning marks the transition from build and test to formal operation and ongoing maintenance.

In practice, projects may blend these stages, with implementation preceding deployment and commissioning, though the exact sequence can vary by domain. Examples include software releases, manufactured equipment installations, and public infrastructure projects.