Your question is Ensure Notification Delivery at Scale. Take a moment with it on the right.
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You are leading an engineering initiative to improve notification reliability for a high-traffic consumer app. Notifications are business-critical because they drive time-sensitive user actions, but delivery can fail across multiple points: event generation, queueing, provider handoff, device delivery, and client rendering. Before committing to a plan, you need a clear execution approach that aligns engineering, product, and operations on what “reliable delivery” actually means and how to de-risk the rollout.
How do you ensure notification delivery at scale?