Reddit, a network of communities, agreed to acquire Spell, a machine-learning platform. Financial terms were not disclosed. “Spell has made product experimentation scalable, enabling engineers to efficiently build and run tests on a platform that already integrates the best high-powered computing in a simple UI that makes it simple for non-technical teams to understand and track. Serkan and his team are a great fit and we look forward to seeing how their capabilities and talent help us make Reddit simpler, richer, and more relevant,” Pali Bhat, Reddit Chief Product Officer.