MLS Infrastructure9 min readJune 2026

RESO Web API vs. RETS: Modern MLS Data Standards Explained for Brokers

RESO Web API RESTful endpoints replace legacy RETS XML replication. Learn how modern API feeds enable real-time natural language listing search.

Why Legacy RETS Integration Is Being Retired

Real Estate Transaction Standard (RETS) required local database replication, causing sync delays and high server maintenance. RESO Web API delivers standardized, web-native RESTful JSON payloads directly from board servers.

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