Modeling the complexities of large-scale online services is becoming increasingly infeasible. Continuous production deployment supplements traditional lab-based testing by providing software teams with insight into what really works. However, without properly architected systems, Continuous Deployment yields its own set of intractable problems.

'Roadmap to Continuous Deployment' outlines one large-scale online service provider's move from quarterly big-batch releases to Continuous Deployment. Once their system architecture evolved to support this new way of releasing software, four categories of technology patterns emerged: Service Isolation, Revision Rollback, Defect Detection, & Continuous Integration in Production.