DHCW TDA 26/06/2026

Previous Actions

Ref	Owner	Due	Description	Status
TDA-A012	CC	17/10	Add Rationale and Implications to all principles for review	⏸️ On Hold
TDA-A013	CC	17/10	Undertake holistic review of all principles and propose changes to make cohesive for review	⏸️ On Hold
TDA-A023	CC/AV	07/11	Work together to define and publish an agreed definition of technical debt. See Technical Debt.	✅ Done
TDA-A024	TDA		Once Technical Debt definition is agreed, TDA to prioritise a specific product to review existing technical debt and report to TDA.	⏳ Open
TDA-A025	TDA Members	26/06	Review Nationally Approved Architecture Principles for adoption by DHCW at next TDA. Update: Adopted, with DHCW-specific extensions permitted where they do not conflict with the national set.	✅ Done
TDA-A026	TDA Members	26/06	Review the full Solution Architecture Strategy for approval at next TDA. Update: Reframed as a playbook/guidance document rather than a formal strategy; to go to TDAG and the architecture community for further review.	✅ Done

Reference	Item	Outcome
TDA-034	Review Technical Debt	Discussed, including NHS App audit findings & Actions TDA-A028, TDA-A030
TDA-035	Technical Design Assurance Group (TDAG) Report	Noted
TDA-036	Solution Architecture Strategy (for approval)	Reframed as a playbook rather than approved as a strategy & Actions TDA-A031, TDA-A032
TDA-037	National Architecture Principles (for approval)	✅ Approved for adoption, with DHCW-specific extensions
TDA-038	Technical Debt Definition (for approval)	✅ Endorsed & Actions TDA-A027, TDA-A029
TDA-039	ADR on Certificate Automation	Discussed & Action TDA-A033

Ref	Owner	Description
TDA-A027	TDA	Communicate the technical debt definition to wider teams and encourage feedback and awareness through town halls and communities of practice.
TDA-A028	Product Teams	Conduct a first-pass, minimum viable assessment of technical debt using the new definition, to inform prioritisation of deeper reviews.
TDA-A029	SH	Discuss with Sam Lloyd the need to make technical debt more visible to the executive team, and consider an executive strategy session after the first-pass assessment results.
TDA-A030	CC/SH	Ask the NHS App team to review their technical debt audit against the new definition and identify any gaps.
TDA-A031	CC/ME	Consolidate feedback and send the Solution Architecture Playbook to TDAG for further review and endorsement as guidance, not a formal strategy.
TDA-A032	CC/TDAG	Feed agreed solution architecture building blocks and patterns into the cloud transition programme, to create standardised, off-the-shelf patterns for teams to use.
TDA-A033	DP	Form a representative working group (architecture, security, government, corporate governance, Welsh language, health boards, end users) to oversee certificate automation procurement and domain namespace policy.