Angular's component-based architecture is useful for developing complex search user interfaces (UIs) tailored to specific needs. The modular design of Angular apps, built with independent components, helps prevent code from becoming messy and confusing. This framework also supports third-party libraries, such as Algolia's InstantSearch library, which can be quickly implemented into the rest of a web app. These libraries are based on widgets that serve as building blocks for search UIs and can be customized to fit specific use cases.