From CPf Web site: The Cloud Interoperability Plugfest project (or “Cloud Plugfests” for short) is a co-operative community series designed to promote interoperability efforts on cloud-based software, frameworks, and standards among vendors, products, projects and implementations. The series supports ongoing and continuing interoperability efforts among and between the sponsoring organizations, and with the cloud community at large. These efforts include organized software demonstrations, in-person developer gatherings, and continuous access to professional-grade cloud testing frameworks and tools.