Do not expect 11.0.23 to connect to SharePoint Online, OneDrive, or Google Drive natively. It was built for on-premise servers (Windows File Servers, SharePoint 2013/2016, Documentum).

Unlike Standard Acrobat or free readers, Pro 11.0.23 lets you:

Users can automate multi-step tasks—like sensitive data redaction or document optimization—into a single "Action" to save time.

To understand the build number, we must look at the version hierarchy. Adobe Acrobat XI (Version 11) was released in 2012. Over its lifecycle, Adobe released a series of "point" updates (11.0.01, 11.0.10, etc.) to fix bugs, enhance stability, and patch security vulnerabilities.