Big webshop or you just like to use as many custom algorithms as possible to provide your customers with the best possible experience? It's all yours: with 1M API calls per month and an 10 GB index, there is a lot you can do! We don't fuss about it when you exceed these limits incidentally.
Build your own algorithm. Relevant and personalized results in realtime for search, search suggestions, facetted navigation, recommendations, lister pages, we basically dare you to come up with something you can't create with a custom algorithm.