As announced with Visual Studio 2013 launch, cloud based load testing with Visual studio Online is in Commercial Preview. This is open to all Visual Studio Online users. You can read more about it here

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Getting Started links

• Download Visual Studio Ultimate 2013 Preview
• Getting started guide for load testing using Team Foundation Service
• Troubleshooting guide for FAQs and known issues
• Team Foundation Service forum for questions and support
• Detailed demo and presentation (link to Tech-Ed session recording)

Usage limits and Early Adoption Program

All users of Team Foundation Service will be able to run load tests on the cloud starting today. This capability is free for now, and we have a limit of  15,000 virtual user minutes per Team Foundation Service account per month during the Preview period. Ex: If your load test consists of 250 concurrent virtual users, you will be able to run this test for a total of 60 minutes per month.

We encourage you to run your tests using the service and provide us feedback to help improve the service. You can learn more about usage limits in the FAQ section of the  troubleshooting guide. Please note that load testing capability is in Preview and the free usage limits could change in future.

We are also announcing an Early Adoption Program if you want to run more load tests per month. To sign-up for this program, please fill the form here with your requirements and we will contact you as soon as possible. As part of the early adoption program, you also have the opportunity of providing feedback directly to the product team.  Our Early Adoption Program is complete and we thank all the users who participated in Early Adoption Program and provided us valuable feedback.

So, what next? Go ahead and download Visual Studio Ultimate 2013 Preview. Run load tests using the service, and let us know what you think. If you like it, you could sign up for the early adoption program. We look forward to your feedback and hope this capability is useful for you.