A build configuration can be made dependent on the artifacts or sources of builds of some other build configurations.
For , TeamCity will run all dependent builds on the sources taken at the moment the build they depend on starts.
For , before the build is started to run, all artifacts the builds depends on will be downloaded and placed in their configured target locations and then can be used by the build.
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The dependencies of the build can later be viewed on the build results page - Dependencies tab. This tab displays also indirect dependencies, e.g. if a build A depends on a build B which depends on builds C and D, then these builds C and D are indirect dependencies for the build A.