Question: Is there a scalable and secure solution that can provide personalized recommendations and improve user engagement on my marketplace?

If you're looking for a scalable and secure way to boost user engagement and personalized recommendations on your marketplace, Recombee is definitely worth a look. This AI-powered recommender service has a powerful RESTful API and SDKs to easily integrate into your business across many industries. Recombee combines deep-learning, collaborative filtering and content-based filtering to provide highly personalized recommendations, serving over a billion recommendations per day. Its scalable architecture ensures optimal KPIs with real-time analytics and AI-powered A/B testing.

Another good option is Shaped, which offers customizable recommendations and search solutions that learn in real-time to optimize engagement and conversions. It's designed for fast integration with existing data sources and offers features like real-time adaptation based on behavioral signals, a library of pre-trained models, and enterprise-grade security. Shaped's platform can be used for a variety of ranking use cases in marketplaces, social media and e-commerce, with a guaranteed performance increase within 30 days or a full refund.

RichRelevance is another powerful option for personalization, offering customized customer experiences across web, mobile and in-store interactions. With a scalable infrastructure and robust platform, it powers leading brands and retailers, boosting conversion rates and return on investment. RichRelevance makes over a billion decisions daily from 14 global data centers, making it a good option for improving user engagement and ultimately revenue.

Last but not least, Nosto offers a Commerce Experience Platform that combines customer, product and content data to personalize online shopping. Its real-time engine with open APIs and deep integrations offers personalized search, product recommendations and dynamic content. Nosto's platform is designed to be easy to use, with rich analytics and experience.AI for data-driven decisions, promising substantial increases in average order value and conversion rates.