This is a UML sequence diagram of a website's advertising application. Starting from the Login/Register website, the user/company performs the following operations: Posting an advertisement, Request to remove an ad, View current and expired ads, etc., and displays messages and method calls representing arrows connecting various activities. For example, Posting an advertisement sends a request to the TechDrive Website, which forwards the user's request to the Techdrive Server/admin. After the Admin review, Admin approved the advertisement, then publish the ad in website and return it to TechDrive Website. TechDrive Website then responds with Advertisement published notification to the user. Sequence diagrams are typically used in conjunction with other UML diagrams, such as class diagrams and activity diagrams, to provide a comprehensive model of the system.
