People with dementia have complex palliative care needs that are often unmet, including physical and psycho-social needs. It is essential to empower people with dementia, family carers and professionals to better assess and manage care needs. We aimed to co-design a palliative dementia care Framework delivered through a digital app to support holistic assessment and decision making for care in the community and care homes-the EMBED-Care Framework. A systematic co-design approach was adopted to develop the EMBED-Care Framework across three stages: 1) Framework analysis to synthesise data from preceding evidence reviews, large routine clinical data and cohort studies of unmet palliative dementia care need; 2) Co-design using iterative workshops with people with dementia, family carers and health and social care professionals to construct the components, design of the app and implementation requirements; and 3) User testing to refine the final Framework and app, and strengthen use for clinical practice and methods of evaluation. The Framework was co-designed for delivery through an app delivered by aTouchAway. It comprised five main components: 1) holistic assessment of palliative care needs using the Integrated Palliative care Outcome Scale-Dementia (IPOS-Dem); 2) alert system of IPOS-Dem scores to highlight unmet needs; 3) IPOS-Dem scores and alerts enable shared decision making between the practitioner, patient and/or carer to support priority setting and goals of care; 4) evidence-informed clinical decision support tools automatically linked with identified needs to manage care; and 5) Training package for users incorporating face-to-face sessions, clinical champions who received additional face-to-face sessions, animated videos and manual covering the main intervention components and email and telephone support from the research team. This is a novel digital palliative dementia care intervention to link holistic assessment with clinical decision support tools that are practical and easy to use but address the complexity of palliative dementia care. The Framework is ready for feasibility testing and pilot studies for people with dementia residing at home or in a care home. We were guided by our Patient and Public Involvement (PPI) group consisting of three people with mild dementia, including younger onset dementia, and seven family carers throughout the project. They supported the overall development of the Framework, including planning of workshops, interpreting findings and testing the framework in our PPI meetings.