Final answer:
The two on-premise versions of SharePoint are SharePoint 2016 and SharePoint 2019, with each offering improved collaboration tools, larger file support, and better integration with Office 365 and SharePoint Online.
Step-by-step explanation:
SharePoint, Microsoft's web-based collaborative platform, has several on-premise versions for organizations that prefer to manage their data and infrastructure in-house rather than in the cloud. The two latest on-premise versions of SharePoint are SharePoint 2016 and SharePoint 2019.
SharePoint 2016 introduced several important features, including increased file size for uploads, a threshold of 10 GB. It provided better integration with Office 365 and introduced MinRole, a feature that simplifies the deployment of SharePoint farms by defining specific roles for servers. It also emphasized hybrid capabilities, allowing for an interconnected experience with SharePoint Online.
SharePoint 2019 built on the predecessor's enhancements, bringing modern site pages, lists, libraries, and communication sites to on-premise users. Among its new features are the SharePoint Home Page, which allows users to find and access SharePoint sites within the organization easily, and modern search, which delivers results more efficiently. SharePoint 2019 also provides better support for business processes with improved PowerApps and Flow integration.
In summary, both SharePoint 2016 and SharePoint 2019 provide improved user experiences and collaboration tools while offering a safer on-premise solution for companies not ready to transition fully to the cloud.