Web Components let you use a UI component made in a different framework than yours. That's it. For most other purposes they're pretty awful. Also they let you

Web Components let you use a UI component made in a different framework than yours. That's it. For most other purposes they're pretty awful. Also they let you publish a UI component that works in every framework, without having to build 7 versions of it (or just exclude everyone who's not on React, or something like that)