Kakao KIMS Achieves 90%+ International MO Conversion Rate with Two-Phase MO Architecture

·2026.10.22 17:26

Key point

The previously unobservable international MO segment was converted to a pre-allocation, post-observation structure, securing a conversion rate in the 90% range.

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Details

  • Introduced a Two-Phase MO (pre-allocation, post-observation) structure to resolve the issue of missing observation for international MO message loss
  • Logs are recorded from the point of number allocation to secure the denominator, and the status is transitioned to MATCHED upon message arrival, enabling direct calculation of real-time conversion rates by country
  • Applied dynamic lookback windows, Win-Stay Lose-Shift routing, and domestic network priority allocation to raise the global average conversion rate to over 90%
  • Follow-up optimization experiments are underway for advanced initial number selection, latency optimization, and Cold-Start resolution based on geographic proximity

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