the blast radius of failures. • There are several ways to do this, therefore think about it. ◦ Shared modules, symbolic links, Only environment directories, or workspaces ... • Use a wrapper script on an as-needed basis. ◦ Reduce the complexity of dealing with workspaces or many directories. • ecspresso — ECS deployment tool — can read a state. ◦ Put data sources associated with it into anyone of states.