Microsoft SQL Server 2005 Analysis Services ADOMD.NET was initially installed by Microsoft SharePoint 2007 for use together with Performance Point and Key Performance Indicator web parts.
ADOMD.NET is also installed by SharePoint 2019, 2016, and 2013, although it is now considered to be an obsolete product.
Because it was included as part of the actual SharePoint installation process instead of as a prerequisite, ADOMD.NET was overlooked when future versions of SharePoint were built. Therefore, the tool was never removed or updated.
You can safely remove SQL Server 2005 Analysis Services ADOMD.NET by using the Programs and Features item or the Add or Remove Programs item in Control Panel, as appropriate.
SQL Server 2005 Analysis Services ADOMD.NET is unused in later versions of SharePoint and will be removed from future versions of the product.
Beginning in SharePoint 2013, users of Performance Point continue to be instructed to install the ADOMD.Net from the SQL Server 2012 Feature Pack.