As illustrated in the following figure, [[Agile software development|Agile]] and [[DevOps]] projects have numerous short duration Vs (a.k.a., sprints) in lieu of a single or small number of V as in the previous two examples of shift-left testing. These small Vs would also be modified if one or more early sprints are used to block out the basic requirements and architecture or if test-first and [[test-driven development]] (TDD) are being performed. The shift-left occurs because the types of testing on the right sides of the earliest of these tiny Vs are to the left of the corresponding types of testing on right side of the larger V(s) they replace. While the following figure appears remarkably the same for Agile and DevOps, Agile testing is typically restricted to developmental testing and does not include operational testing, which occurs once the system is placed into operation. The transition to Agile/DevOps shift-left testing is currently popular and ongoing.
