Adobe Flash (previously called Shockwave Flash and Macromedia Flash) is a set of multimedia technologies developed and distributed by Adobe Systems and earlier by Macromedia. Since its introduction in 1996, Flash technology has become a popular method for adding animation and interactivity to web pages.

Flash is commonly used to create animation, advertisements, and various web page components, to integrate video into web pages, and, more recently, to develop rich Internet applications. In particular, the Flash platform allows designers to create stunning visual experiences and offer visitors incredible user interaction. However, in regards to SEO (search engine optimization), Flash is not the best medium for clients or companies who are concerned with accessibility and usability. In spite of the latter, Flass has many advantages and empowers the Web with functionalities that make it an incredibly interactive medium. With Flash, designers can achieve results which simply aren’t possible with (X)HTML and CSS.