The Ambient Assisted Living Roadmap is produced by the European Ambient Assisted Living Innovation Alliance, funded under the 7th European Framework Programme. In the first chapter new developing trends in AAL are looked at from different perspectives and barriers to their implementation are discussed. This is followed by a detailed discussion of the application domains; AAL4persons (Chapter 2), AAL@community (Chapter 3), AAL@work (Chapter 4) and a detailed presentation of the enabling technologies - sensing, reasoning, acting, interaction and communication - (Chapter 5). The final chapter presents a way to set up an AAL system (Chapter 6). This results in a document that can be considered as the technology roadmap for AAL. This updated version 2 is available only as a printed book.