Various example embodiments are directed to scale testing based on scenarios. A computer system may receive a scenario, which may comprise a plurality of scenario objects including, a first host, a second host, a plurality of transports, a plurality of variables and a plurality of steps. The computer system may also receive a pattern. The scenario may be processed to generate a processed scenario. The computer system may execute a first track including executing a plurality of concurrencies of the processed scenario according to the pattern.