Difference between @fluentui/react and @fluentui/react-components?

[crfrolik]

I am new to this library. Can someone explain what the difference is between these two packages, and why I would want one vs. the other?

[carlamntn]

@fluentui/react is the older, legacy version of Fluent UI library, uses older styling techniques and will be deprecated soon, while @fluentui/react-components is the modern, performance-optimized version built on Fluent UI v9, featuring performance-focused design, a simplified API surface, and a styling system powered by Griffel for CSS-in-JS at build time. @fluentui/react-components is the maintained version. Developers are encouraged to use @fluentui/react-components