Microsoft SharePoint online
SharePoint is a cloud-based service offered from Microsoft that helps
organizations share and manage content, knowledge, and applications to
empower teamwork, quickly find information and seamlessly collaborate
across the organization.
In our research and deployment we have privileged enterprise
infrastructure setup of SharePoint online in cloud to host the
application that provides single sign on authentication using O365 with
directory services, out of the box workflow development for email send
and receive and host the database using SharePoint online Document
library and SharePoint lists.