Home > Storage > ObjectScale and ECS > Product Documentation > Dell ECS: Technical FAQ > Authentication
Question: Which authentication providers are available with ECS?
ECS supports Active Directory, LDAP, and Keystone v3, an OpenStack project that provides identity, token, catalog, and policy services. Keystone compatibility allows ECS to be a drop-in replacement for OpenStack Swift. Authentication providers enable control and monitoring of administration users, not object access users.
Note: Identity and Access Management (IAM) functionality was released in version 3.5 and IAM is only for data (bucket/object) accessed by the S3 protocol.