In-depth coverage of the MLS industry: lawsuits, policy, data and the fight over listings.
The Real Estate Standards Organization (RESO) maintains the Data Dictionary and Web API standards that MLSs and technology vendors use to exchange listing data. Official site ↗
Highlights from RESO's Oct. 19–21 conference in Colorado Springs: hundreds of MLSs still lag on current data standards and certification, and speakers urged the industry to spell out coming-soon listing rules — display, syndication, showings, days on market — in explicit data fields rather than relying on inconsistent status names.
Play video: Introduction to the RESO Data Dictionary - RESO 2026 Summer Camp Webinar Series53:28RESO 2026 Summer Camp webinar introducing the RESO Data Dictionary.
Play video: Standards as Strategic Leverage - RESO 2026 Spring25:29RESO 2026 Spring conference session on data standards as strategic leverage.
Play video: Unlawful Distribution, and What Standards Can Do About It - RESO 2026 Spring17:47RESO 2026 Spring conference session on unauthorized distribution of listing data and what data standards can do about it.
Play video: Proving MLS Value with RESO Data - RESO 2025 Fall21:15RESO 2025 Fall conference session on using RESO data to demonstrate the value of the MLS.