How Meta Built Threads to Support 100 Million Signups in 5 Days
Last Updated on May 2, 2025 by Editorial Team
Author(s): Kalash Vasaniya
Originally published on Towards AI.
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Threads, Meta’s newest social platform, launched on July 5, 2023, as a real-time, public conversation space.
Built in under five months by a small engineering team, the product received immediate momentum. Infrastructure teams had to respond immediately to the incredible demand.
When a new app hits 100 million signups in under a week, the instinct is to assume someone built a miracle backend overnight. That’s not what happened with Threads. There was no time to build new systems or bespoke scaling plans. The only option was to trust the machinery already in place.
And that machinery worked quite smoothly. As millions signed up in 5 days, the backend systems held… Read the full blog for free on Medium.
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