QTRACA is hosted on Heroku, a leading cloud platform service owned by cloud software provider Salesforce.
Heroku itself is fully hosted on Amazon Web Services (AWS) data centers. AWS one of the worlds leading providers of cloud based services.
For more information on Heroku security refer here: https://www.heroku.com/policy/security
For more information on Heroku compliance refer here: https://devcenter.heroku.com/articles/security-privacy-compliance