A portlet is a small software component that can be used to create a web page or dashboard. It is typically used in enterprise environments to provide users with quick access to relevant data and applications. Portlets are designed to be easy to customize and can be used to create personalized portals for individual users or groups. They are often part of a larger content management or portal system and can be used to display information from a variety of different sources, including databases, web services, and other applications.