There are many things that I like about doppelio. 1. Ease of use 2. Customer Support is 100% available whenever required. 3. You can blindly trust the platform while keeping your long run performance test for days (tried running tests for a week and never faced any issues) 4. Improvisations based on my (i.e. customer's) feedback is too quick. 5. You can use it on any scale (I personally tried for 100,000 simulators and works seemlessly fine. 6. Load testing can be done way easier and we can send any type of packets with any rate (static and dynamic packets can be sent to the Iothub or any other service) 7. Not just limited to the IoThub solutions, but can also be used for calling specific API's in bulk (I've tried around 4000 API calls per minute with consistency for couple of hours). Can also call API's in sequence and can capture response for validation purpose. 8. Logs are thoroughly defined and can be downloaded anytime easily. 9. Test suite runtime results are presented in graphical format and are easy to understand. 10. Easy to implement and create test suites without any support.

This is a wonderful and best tool to test IOT-based applications. Onboarding to the tool is easy and hassle-free. Easy to create IOT models and scenarios based on the need. Takes less time to set up and test the application. Easily can create any type of scenario based on the need and push the data/messages to the cloud at the required rate. Detailed logs provide all the required transactions with timing details, and help to troubleshoot issues on the go. We can bring up millions of devices in less time and send multiple messages to IOT at a high rate and with accuracy. Easily can do load/performance/stress testing on the application. No prior coding experience is needed to use this tool. Customer support is awesome. The team is always there to help and take suggestions, feedbacks and they implement improvements as early as possible.

Enables increased test coverage and accelerated testing by simulating D2C, C2D device scenarios without having to deal with the hardware or simulation scripts. Support for simulating large numbers of devices on the click of a button. Smooth onboarding.Platform is easy to use.Support team is very helpful and available always. Saves time and effort.