System Design · Microsoft · Medium
Worldwide One-to-One Voice Calling Platform Design a voice calling service that serves tens of millions of registered mobile clients around the globe. Any user can call any other registered user; the called party receives an incoming-call alert, can accept or decline, and an established call transports live audio streams between the two participants. Constraints & Assumptions Keep clear boundaries among account/device lifecycle management, call-signaling, push delivery, and…
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