The scalability of HeadSpin is good. We have had no problems with performance.

It is absolutely scalable. It can very easily handle the device load of more than 100 or 200 devices. We have more than 100 users in our organization.

The scalability is completely based on how many devices you have access to. If you have 10 devices, one person can only access one device at a time.

If you want to access multiple devices at the same time, you have the option of distribution testing. This means that if you have 50 test cases and you want to execute them in five devices, to make things faster each device can run 10 test cases. I have seen that feature documented, but we are still exploring it and haven't explored quite that far yet.

I have only tested the solution with a few devices. I do not have more information about scalability.

We have a total of approximately five people using this solution in my organization.

It is scalable and depends on the test or report desired. If you're targeting a specific area, you can roll out an already known test case to get a better result.

It's scalable, as it's a cloud solution. 

The viability is good for this solution. 

We are using Amazon Virtual assistant on our projects, one or two times a year.

It's a bit complicated to indicate the number of users, at times our teams merge with our customers.