Gartner Report: A Guidance Framework for Testing IoT Solutions

Take a look at this report  by Gartner's Research VP Sean Kenefick
about  testing IoT solutions. It mentions MIMIC Simulator as a test tool.

"... An IoT solution may be made up of hundreds or thousands of devices. To
test all of the devices in their real environments may be prohibitively
expensive or dangerous. However, you also need to ensure that your IoT
platform and back-end systems can handle the load of all of those devices
and correctly send and receive data as necessary."

MIMIC IoT Simulator enables rapid development, testing, tuning,
deployment and training of large-scale, heterogeneous IoT environments.