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Defence Estate Quality Management System (DEQMS) Davis Langdon Certification Services




Lifecycle Phases

Estate & Infrastructure Life Cycle Phases

The current Estate and Infrastructure Group's life cycle phases have changed to align with the new Capability Life Cycle Phases. These new Phases, reflected in the diagram above, are a result of the First Principles Review and subsequent revised Capability Life Cycle that came into effect on 1st April 2016. This new framework will now apply to all Programs, Projects and Products across the life cycle.

The new capability life cycle has four key phases which we will be running in parallel to familiarise you with the changes.

For more information on the new Capability Life Cycle Phases and other key information please click on the following link:

Strategy and Concepts

The purpose of the Strategy and Concepts Phase is to identify capability needs that are informed by assessments of our ability to meet the Defence missions set out in strategic guidance, within the broad funding guidance provided to Defence. This process is strategy led and orchestrated from the Strategic Centre through the Force Design process. The outcome of this phase is prioritisation within the Integrated Investment Program. The two key outputs of the Strategy and Concepts Phase are an agreed Joint Capability Needs Statement and a Project Execution Strategy.

Risk Mitigation and Requirement Setting

The Risk Mitigation and Requirement Setting Phase involves development and progression of capability options through the investment process. The outcome of this phase will lead to government approval to proceed to acquisition. The primary output of this phase is a firm contract able proposition to acquire and sustain the required capability, which forms the core of the Gate 2 Business Case.


The Acquisition Phase involves placing a contract with industry to acquire the required capability, executing that contract and introducing the capability into service.

In-service and Disposal

The In-Service and Disposal Phase involves supporting the capability through its in-service life. Disposal involves withdrawing the capability from service, managing the transition to a replacement (if required) and final disposal of the product.