Many computers (and most mobile devices) cannot play Flash content and many users have no interest in installing the once dominant software.
This poses a difficulty for older business websites with Flash based content.
It is being abandoned by Adobe and bug fixes are scheduled to cease completely by December 31, 2020. Flash ruled the Web’s interactive content and its success led to its eventual purchase by Adobe in 2005. Being without Flash meant videos wouldn’t play, slideshows wouldn’t get displayed, and interactive websites wouldn’t load. Once upon a time you could barely get around the Web without the Flash extension installed on your web browser. Adobe Flash has been used to develop and play animations, audio and video content, games, and web apps. Flash is a multimedia software platform that was once a dominant force on the Web.