Scaling secure enclave environments with Signal and Azure confidential computing

Signal is a free, open-source, private messaging application designed to protect the privacy of messages and user data. The nonprofit organization had employed Microsoft Azure confidential computing as one of its cloud solutions, using secure enclaves to host back-end services. When the app soared to a top position in app stores across the world in 2021, Signal quickly scaled up its confidential computing workloads on Azure, taking advantage of the platform’s high availability, reliability, and support during the massive growth.