A slot is a position in a group, series, or sequence. It can also be a job or assignment, especially in an organization. The word comes from Middle Low German and Middle Dutch slot, akin to French sclave.
A slot is a dynamic placeholder that can either wait for content (a passive slot) or call for it using an Add Items to Slot action or a Targeter. Once the slots are populated with content, they can be displayed on the page using a Views container. Slots can be used to manage dynamic content and are a key component of the Sitecore CMS SPA platform. However, there are many misconceptions around the use of slots that can cause confusion for developers and customers alike. This article will help to clarify some of these myths and provide a clear understanding of the role of slots in Sitecore CMS.