Which format is recognized as the industry standard for interactive rich media?

The industry standard for interactive rich media is HTML5. This format provides comprehensive support for multimedia elements, including video, audio, and animations, all within a framework that works seamlessly across various devices and platforms without the need for additional plugins.

HTML5 enables developers to create responsive, interactive content that is accessible on desktops, smartphones, and tablets, which is vital in today's digital landscape where users access content from a multitude of devices. The standard also enhances features like local storage and canvas elements, allowing for rich interactivity and engaging user experiences.

Flash, while once popular for rich media, has been phased out due to compatibility issues and security vulnerabilities. JavaScript, on the other hand, is a scripting language that can enhance HTML5 content but is not a standalone format for interactive media. CSS3 adds styling capabilities but does not inherently provide interactive functionality like HTML5 does. Thus, HTML5 stands out as the go-to standard for creating and displaying interactive rich media today.