A service’s guts, the engineering behind the app itself, are the foundation of any streamer’s success, and Netflix has spent the last 10 years building out an expansive server network called Open Connect in order to avoid many modern streaming headaches. It’s the thing that’s allowed Netflix to serve up a far more reliable experience than its competitors and not falter when some 111 million users tuned in to Squid Game during its earliest weeks on the service.

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