Continuous deployment is the practice of releasing software updates to production as soon as it is ready, which is receiving increased adoption in industry. The frequency of updates of mobile software has traditionally lagged the state of practice for cloud-based services for a number of reasons. Mobile versions can only be released periodically. Users can choose when and if to upgrade, which means that several different releases coexist in production. There are hundreds of Android hardware variants, which increases the risk of having errors in the software being deployed.