1. A system comprising: a memory storing processor-executable instructions; and a processor to execute the processor-executable instructions to cause the system to: obtain a plurality of different application program interfaces (APIs), one for each of a plurality of different technology stacks, to be used in a test flow of a product constructed of the plurality of different technology stacks; generate a model of a test flow using each of the plurality of different APIs; define input and output parameters for each of the plurality of different APIs in the model; automatically generate executable instructions to perform the modeled test flow including the plurality of different APIs in a single execution; and store a record of the executable instructions to perform modeled test flow.