Instead of buying a "box," they are now buying : What is IaaS (Infrastructure as a Service)? | Google Cloud
A sudden spike in users meant the servers would crash.
If they over-bought, they wasted money. If they under-bought, they lost customers. The Turning Point: Choosing to "Rent" instead of "Own"
The decision to "buy IaaS" (Infrastructure as a Service) is rarely just a technical checkbox—it is a story of a business outgrowing its physical limits.
To fix it, they had to buy expensive new hardware, wait weeks for shipping, and hire someone to install it.