Zoho One provides a lot of features that help you unify your work across apps. Single Sign-on, a feature that unifies authentication and lets you sign in to all your enterprise apps without having to individually enter credentials everytime. We currently have about 50 pre-integrated apps that can be easily connected with Zoho One via SSO, and an option to set up an SSO connection with any cloud app that supports the SAML protocol.
If you're interested in how all that works, here's a deep dive into SSO.