Flash Player was a software application developed by Adobe that allowed users to view multimedia content, such as animations, videos, and interactive games, on the web. It played a significant role in the early days of online entertainment and was widely used for creating rich internet applications. However, due to security vulnerabilities and the rise of more modern technologies like HTML5, Adobe officially discontinued Flash Player on December 31, 2020. As a result, many websites transitioned away from Flash, leading to a decline in its usage and support across the internet.