Facebook API Rate Limits Analysis

I’m actively sending Instagram business messages through graph.facebook.com and want to be absolutely sure I won’t hit a wall as traffic grows. Please research and document every rate-limiting rule that applies to the Instagram Graph API messaging endpoints, then map how those limits change across the three dimensions that matter to me:

• API type – focus is the Instagram Graph API (messaging scope).
• Business verification status – I’m still in the “in the process of verification” stage, so I need limits for unverified versus verified portfolios.
• Partner tiers – show whether becoming a Tech Partner or obtaining Advanced Access raises any ceilings or removes bursts.

Deliverables I expect:
1. A concise matrix (PDF or Google Sheet) listing each relevant endpoint or throttle bucket, the numeric limit, the time window, and the error code returned when the limit is exceeded.
2. Commentary on the practical impact of those limits for message-sending volume, plus proven work-arounds (queueing, retries, app stacking, etc.).
3. A short note on monitoring: which headers, insights, or debug tools I can poll to read my current usage in real time.

Cite official Meta/Facebook docs, changelog notes, or confirmed partner communications for every figure you give; hearsay or outdated blog posts won’t do. My priority is speed and accuracy, so if you already have privileged or partner-level insight, that’s a plus—let me know up front.