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by burnout1540 4092 days ago
That sounds like registered users, which may be completely different than active users. The number of registered users tells you very little without also knowing the number of active and/or concurrent users and what type of activity they're doing.
2 comments

I agree. Look at engagement rates and how the curve looks on that end. It is much more important than stale users who registered but never used your service/product.

Either way, I'd say a few million users is pretty impressive.

Agree that total users shouldn't be looked at without % of actives, but he's not asking if it's impressive from the POV of evaluating the business. He's asking in terms of evaluating an engineer who handled the scaling from a technical POV.