Portlet development using Liferay Presentation provides an overview of portlets and portlet containers. It discusses key concepts such as portlet standards JSR 168 and JSR 286, portlet modes and window states, portlet entity storage, portlet deployment, portlet methods, portlet sessions, and popular portal vendors including Liferay. The presentation introduces portlets as pluggable UI components that can be placed on portals, which are collections of portlets, and discusses how portlet containers manage the portlet lifecycle and provide persistent storage.