What makes sourcing different
Every earlier product decision was reversible. Research, modeling, positioning — a wrong call there cost time and a little money, and you could change your mind at no real penalty. Sourcing is where that stops. This is where money leaves your account, crosses a border, and funds production you cannot un-order.
The goal is no longer to move fast; it is to be sure before each commitment, because most sourcing mistakes cannot be undone. A supplier who cannot deliver, a sample you approved too quickly, a certificate you never checked — each surfaces after the money is gone. Treat every step as a gate you earn your way through, not a form to fill in.
The five gates
Sourcing runs as a fixed sequence. Each gate depends on the one before it, so clearing them in order is what keeps the process honest. Do not pay before you have vetted; do not commit before you know your true cost.