Your platform performed well at launch. Traffic has tripled since then
Launch performance benchmarks reflected launch traffic. Content volume was manageable. User patterns were predictable. Infrastructure matched known requirements.
Performance isn't a launch requirement, it's an ongoing commitment. Content accumulates. Features add complexity. Integration calls multiply. Each change affects performance invisibly until users notice degradation, then everyone notices simultaneously. Organizations that treat performance as a launch checkbox discover problems through complaints rather than monitoring.
The real question
Does your organization have the operational systems in place to maintain it as everything changes?