Enterprise information archiving (EIA) is the next step in the evolution of archiving that incorporates new products and solutions for archiving user data (e-mail, files on file shares, instant messages, Microsoft SharePoint documents), and, optionally, other content types such as structured data. These products provide features such as single-instance storage across content types, retention management, content indexing and at least basic tools for e-discovery, such as search and legal hold. Due to the complexity associated with managing multiple data types within an archive, enterprise information archiving may more broadly encompass capabilities like federated archive repository management, while delivering common policy management for migration, retention and discovery.