VMware has launched an open-source platform as a service called Cloud Foundry, which allows developers to run their applications on infrastructure operated by VMware. The platform supports MongoDB right out of the box, making it easier for developers to build and deploy MongoDB-based applications. A tutorial guides users through creating a Rails application using MongoDB and Cloud Foundry, including setting up dependencies, building a simple app that interacts with the database, and pushing the application to Cloud Foundry. The tutorial provides step-by-step instructions and examples, making it accessible to developers of all skill levels.