This chapter deals with digital archives and digital archiving of language materials, especially materials from endangered languages. Archives have traditionally made decisions about which materials they accept for deposit, based on their collection policy. Standards are important for the effective operation of digital archives. Standards are promoted in pursuit of three goals: quality, interoperability and the integrity of the archive's collections. Digital archives have to take account of many factors to ensure long-term preservation, from the broader political, organizational and financial issues that guarantee their sustainable operations, to budget and equipment planning, to technical details of scheduling automated tape backups. In an emerging field such as documentation of endangered languages, archives can draw on digital technologies and standards developed over the last forty years, but they have to provide discipline-specific facilities to meet the needs of their users.