Algolia provides a hosted Search & Discovery infrastructure that helps enterprises and developers index content and deliver fast, relevant, and personalized search experiences. It combines traditional ranking, typo-tolerance and relevance tuning with modern features like semantic Answers (natural-language question answering) powered by large language models and integrations (e.g., OpenAI) to surface precise passages of content. Algolia offers client libraries, UI libraries (InstantSearch, Autocomplete), and operational tooling to integrate, monitor, and scale search across e-commerce, publishing, support desks, and documentation portals while maintaining low latency and high throughput.