Design and project execution should be about taking on the key risks in your project. If you're a startup, the biggest risk might be 'is there a market for thi

Design and project execution should be about taking on the key risks in your project. If you're a startup, the biggest risk might be 'is there a market for this?'. In this case, yeah, maybe skip a lot of the design, get something rough-and-ready to the market. If you're a bank, your biggest risks are probably around reputation, security, compliance, etc. In this case, you might do a lot of design around scalability and reliability. So I'm an advocate of always doing design - just make sure you focus on the parts that count.