Y Combinator and Silicon Valley Learned How to Scale

The first thing you have to do is build a product that is so good. People spontaneously want to use it and tell their friends about it. If you can do that, you still have to blitz scale, but it's the easy kind. It's you have too much demand. The hard kind of blitz scaling is where you try to start scaling up before the product is really great. And then most of your effort in scaling is to generate demand.