Building your business is hard, but scaling your business data shouldn't be. Sailthru's CTO Ian White explained how the company moved from application-level sharding to MongoDB's auto-sharding to simplify development and handle massive data volumes. With over 40 terabytes of data stored across 120 nodes on mostly physical infrastructure, Sailthru adopted MongoDB's auto-sharding feature to transparently distribute and balance data across shards automatically. This change enabled the company to add shards without modifying their code base, allowing them to focus on improving their service and building new features, ultimately contributing to their phenomenal success.