This chapter briefly discusses the history of the Affordable Care Act (ACA) and community and presents specific components of the ACA in relationship to community prevention. The chapter deals with specific aspects of the legislation that impact older adults and people with disabilities. It presents a short review of the ten titles: Title one: quality, affordable health care for all Americans; Title two: role of public program; Title three: improving the quality and efficiency of health care; Title four: prevention of chronic disease and improving public health; Title five: health care workforce; Title six: transparency and program integrity; Title seven: improving access to innovative medical therapies; Title eight: Class Act; Title nine: revenue provision; Title ten: strengthening quality, affordable health care for all Americans. The chapter explains some of the legislative highlights, policies, and programs that have been articulated within each of the specific titles of the ACA.