The summary is as follows: The MongoDB Pluggable Storage Engines, also known as the Storage Engine Summit, aims to make it fast and easy for developers to build new storage engines that allow the database to be extended with new capabilities. This allows users to configure their database for specific hardware architectures, reducing complexity and enabling the use of a single query language and data model across different applications. The summit reviewed the status of current MongoDB storage engines, provided visibility into the roadmap, collected feature requirements, and developed best practices for community collaboration. The storage engine API has led to significant progress, with two supported storage engines shipping with MongoDB 3.0: MMAPv1 and WiredTiger, which provide benefits such as lower storage costs, greater hardware utilization, higher throughput, and more predictable performance. Experimental engines have also shipped, and the community has released its own engines, including mongo-rocks from Facebook and TokuMXse from Percona. The summit connected developers with MongoDB engineers, leading to feedback that has already helped evolve the storage engine API in the current release and will be reflected in future enhancements.