Systems and techniques are described for defining test bed requirements. A described technique includes receiving data specifying a first test to be performed for a software application. The data identifies test bed requirements for the first test. Data identifying characteristics of each of available test beds are obtained. Each available test bed includes one or more computing resources on which software tests are performed. The characteristics of each available test bed specify characteristics of the one or more computing resources included in the available test bed. A determination is made that the characteristics of a particular test bed of the available test beds satisfy the test bed requirements for the first test. In response to determining that the characteristics of the particular test bed satisfy the test bed requirements, the first test is performed using the particular test bed.