There is some confusion among developers and Realtors® alike as to what the difference of RETS and IDX are. So I figured that I would write a short blog entry on this, to help clear up the confusion. First, lets start by looking at IDX and what that term means. IDX stands for Internet Data Exchange, and was a mandate from the National Associations of Realtors® that said the “Associations of REALTORS® and their Multiple Listing Services must enable MLS Participants to display on Participants’ public websites aggregated MLS active listing information subject to the requirements of state law and regulation.”

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