Openstack is one of the largest OSS projects today with hundreds of commits flowing in daily. This high rate of change requires an advanced CI infrastructure. The purpose of the talk is to provide an overview of this infrastructure, explaining the role of each tool and the pipelines along which changes have to travel before they find their way into the approved Openstack codebase. Talk delivered by Anton Weiss at Openstack Day Israel 2016 : http://www.openstack-israel.org/#!agenda/cjg9 [slideshare id=62796201&doc=openstackci-160607053245]