Requirements

• Requirements is a formal description of how the system should behave
• It's important to raise the right requirements because changes in large systems are expensive (engineers, contracts, reputation, brand)
• Requirements are the architectural drivers

Gathering requirements

• The client (who demands the feature) usually do not know what they need (the requirement), but they know what they want to solve
• Allow people to join drivers on a route, who are willing to take passengers for a fee
• A system that allows sharing of large files between users.

• What problem is being solved here?

• Make the right questions to solve the problem!