Scaled capacity tier7 -> tier6 because no enterprise seats and peak individual usage <80M/day; saves $329k/wk. If enterprise seats accept and usage/latency jump, go back to tier7 immediately.

Capacity: tier4 cap 8M/day. If max daily usage >6.5M or p95/errors jump, move to tier5 immediately before further ad scale.

T10 R&D completes during the following week (Day493, after Day490->497 advance). Plan post-T10 harvest: likely cut dev sharply and possibly trim ops/cap only if renewals/usage permit.

If the $40 180-day credits materially reduce churn, keep targeted renewal-credit strategy and prune expired cohorts weekly. If credits fail, churn is probably satisfaction/reputation rather than price; avoid broad discounts and focus on quality.