1.2 The Ministry of Defence (the department) has already committed to releasing the Strategy for Defence Infrastructure (SDI) before the end of 2021. The Strategy’s vision is for a safe estate, fit for purpose to deliver military capability and support Defence people and aligns with the ambition set out in the 2020 Spending Review (SR) and 2021 Integrated Review (IR) and Command Paper. The department is investing £9.3 billion over the next ten years, which includes £4.3 billion for the Defence Estate Optimisation (DEO) portfolio and £5 billion on further modernisation of the estate. The department spends approximately £4.5 billion, annually on meeting routine running costs (£2.3 billion), conducting minor upgrade tasks (£560 million) and delivering more substantive repairs (£1.7 billion). 1.3 The DEO portfolio is now fully funded for the first time and is being adjusted to align with the direction set out in the 2021 IR for the future of the armed forces. The work to update the plan is expected to be completed by Spring 2022, the results of which will be shared with the Committee. 3.4 Following the 2020 SR, DEO is now fully funded following a gap left by withdrawal of Private Finance funding. It will meet new capability demands and be an important but not exclusive part of optimising the estate. The DEO portfolio SRO has worked closely with the Infrastructure and Projects Authority and engaged with a client-side partner to provide private sector and industry knowledge for maximising returns. The SRO has also engaged with relevant cross-Whitehall stakeholders, such as the Cabinet Office and the Department for Levelling Up, Housing and Communities.