Glossary

Terms beginning with D

defect

An identified error or non-conformance in an approved deliverable.

defined (way of working)

Common glossary definition

A documented way of working which people are expected to use. This can apply to any aspect of a governance or management framework. For example, processes, codes of practice, methods, templates, tools and guides.

delegated authority and delegation letter

Common glossary definition

A standing authorisation by HM Treasury under which a body may commit resources or incur expenditure from money voted by Parliament without specific prior approval from HM Treasury. Delegated authorities may also authorise commitments to spend (including the acceptance of contingent liabilities) and to deal with special transactions (such as write-offs) without prior approval.

delivery approach

The practices and methods used to design and implement a solution or part of a solution

Note: sometimes qualified as, such as:

• adaptive; an approach in which the requirements are subject to a high level of uncertainty and volatility and are likely to change throughout the work
• iterative; an approach that focuses on an initial, simplified implementation then progressively elaborates adding to the feature set until the final deliverable is complete
• sequential or predictive; where work proceeds in a sequence of predefined steps

digital twin

A digital replica of physical assets (physical twin), processes and systems

Note: digital twin can be used as a model to reflect a solution in design, or, through sensors, a real system in operation.

diversity and inclusion

Common glossary definition

Diversity provides a focus on championing a broad range of backgrounds and opinions- included those protected by prevailing equality legislation- with the merit principle front and centre and drawing on the talents of the widest possible range of geographical, social and career backgrounds. All diversity and inclusion people policies, processes and practices should be data-driven, evidence-led and delivery-focused.