There are numerous solutions available but Active Directory is a market leader.
Azure AD (Active Directory)
We want to be able to connect to apps we using a frictionless configuration across cloud, mobile, and on-premises apps. There are multiple Software-as-a-service apps we need access to but maintaining multiple passwords is not ideal and can reduce efficiency when having to deal with multiple login scenarios. By utilizing a central point for access, authorization and control we can make it easy to this important boundary.