Extensible software release management automation service

Technologies are disclosed herein for automated software release lifecycle management. In particular, a software release management network service is disclosed that provides functionality for allowing a software developer to automate aspects of a software release pipeline. A software release pipeline can have multiple stages, each of which can have multiple actions. The actions can include internal actions that utilize network services internal to a service provider network. The actions can also include external actions that utilize network services that are external to a service provider network. The internal and external actions can perform various release-related functions, such as obtaining source code, building the source code, deploying built program code, and for performing tests. Stage gates and/or action gates can also be defined for conditional execution of the next stage or action in a software release pipeline, respectively. A gate bypass can also be specified to override stage or action gates.