Alzheimer’s Disease International highlighted in 2016 the role of primary care in dementia. With overly specialised healthcare systems and stretched specialist workforce, dementia is currently under-diagnosed and under-managed. While various service models have been trialled in different parts of the world, several barriers remain; among them are a lack of a gatekeeping role for primary care in highly stretched healthcare systems and a perception that primary care is of a lower quality. In this chapter, we briefly review and outline the possible roles of primary care, including the gatekeeping role, based on the concepts and practices of task-shifting and task-sharing in dementia care. Examples of primary care models in dementia are given, followed by a basic overview of the work-up, diagnosis, and management related to simple, uncomplicated Alzheimer’s disease in line with gatekeeping and task-shifting/sharing. With this background, we then move on to the rationales and evidence of integrated health and social care services, with an example of community primary care-based integrated health and social care services, from which the cases provided in this book were drawn.