I studied how Amplitude (YC W12) went from zero to IPO in 9 years at $5 billion valuation

[tessal]

@alfie13 Sorry friend, but your key lessons are kind of useless.

1. YC underlines that you should talk to customers.
2. Same as 1.
3. Good luck with recognizing that...
4. Business 101
5. Empty words
6. Business 101
7. If people use it, it means the product is useful. Common sense.
8. YC always says that you should charge early.
9. Marketing 101.