test-load — Measured concurrency, not a guess

Degree of freedom: MIXED — journey design [HIGH freedom]; env choice and profile order [LOW freedom]. Never production without explicit sign-off and rate caps.

Turn "I think it'll hold" into numbers: at N concurrent users, p95 is X, error rate is Y, it falls over at Z.

audit-resilience tells you retries exist; this proves whether they save you when 500 people arrive at once.

This skill vs neighbors