A Feature in SharePoint is a container of different pre-defined extensions for SharePoint Server 2010, and it is composed of a bundle of XML files that are deployed to front-end Web servers and other application servers. A feature can be deployed in SharePoint as part of a solution package while you could individually activate features in SharePoint server sites.

Files to define a feature are as follows:
  • Feature.xml
  • A manifest file (elements.xml)
BY Best Interview Question ON 18 Feb 2020