Constraint card and nonfunctional requirements

[seema.sonkiya]

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Q5) For Nonfunctionally Requirement. How is Constraint card different from user story nonfunctional.

Many times we call non-functional requirements as constraints. It is like - if we say - our product should be able to handle 100K users concurrently. Then it is like a constraint on the team as they need to achieve it, they need to find a way to get this need. If the team has to achieve this anyhow, then many times it limits design choices --> In this way calling constraint a non-functional requirement is more logical.