More than 1,000 developers, vendors and end-users of open-source software have gathered in Seattle this week for the sold-out CloudNativeCon + KubeCon, a conference devoted to technologies for microservices, containers and the cloud. The show is sponsored by the Cloud Native Computing Foundation (CNCF), formed in December 2015 as part of the non-profit Linux Foundation, a nonprofit advancing professional open-source management for mass collaboration. .