Flash is an innovative technology developed by Macromedia, offering both visual and audio elements to animate web pages and online advertising content. Initially, using this technology required the installation of a specific plugin, but now the player is integrated by default into all desktop browsers. Flash is widely used on websites, in online advertising, visual animations, and interactive games.

Despite the progress made in this area, Flash still presents challenges in terms of search engine optimization (SEO) and, especially, regarding compatibility with mobile devices, particularly smartphones. This technology is gradually being replaced by solutions better suited to smartphones, thus offering a better user experience on these devices.