Methods, systems, and apparatus, including computer programs encoded on computer storage media, for providing guided provisioning and configuration of a message broker cluster. One of the methods includes maintaining a message broker platform system configured to host one or more message broker clusters in a cloud computing environment of a distributed computing system. A first software platform system configured to host user-provided computing tasks in the distributed computing system receives a computing task, provisions computing resources in an underlying cloud computing infrastructure, and launches one or more instances of the computing task using the provisioned computing resources in the underlying cloud computing infrastructure. The message broker platform system binds the computing task in the first software platform system to the message broker cluster in the message broker platform system.