I've watched Algolia transform from a developer darling into something business teams actually understand they need—usually right after watching their site analytics reveal that 40% of visitors use search and half of those leave empty-handed. The promise is simple: make your site's search work like Amazon's or Google's, where results appear instantly and actually match what people want. After implementing it across ecommerce sites doing $2M to $50M annually, I can confirm it mostly delivers on that promise, though with some important caveats.
If you're running a serious ecommerce operation or content site where search directly impacts revenue, Algolia is probably worth the investment and technical effort. Small businesses and non-technical teams should exhaust simpler options first, as you're buying enterprise power that requires enterprise-level implementation support to use properly.