Massive cloud provider with near-infinite scale
A hyperscaler is a large cloud infrastructure provider — primarily AWS, Microsoft Azure, and Google Cloud — capable of scaling compute, storage, and networking to virtually unlimited levels on demand. Most SaaS companies are built on top of hyperscalers.
When a SaaS company goes viral overnight, they don't panic about servers — they're on AWS and just pay for the extra compute. That's the hyperscaler value proposition.