Planets is a 4-year, €15 million European Union funded project involving 16 national libraries, archives, technology companies and universities to address challenges in long-term digital preservation. The project aims to improve decision making around digital preservation, control costs through increased automation and scalable infrastructure, and ensure wide adoption of preservation services and tools. The Planets architecture includes tools for preservation planning, action, file characterization, and a testbed for experimentation and validation of preservation plans.