IDX (Internet Data Exchange): Real Estate SEO Glossary Definition

Quick definition: IDX is the system that pulls live MLS listings into a real estate website.

What it means

Internet Data Exchange (IDX) is the standardized feed that lets brokers and agents display MLS property listings on their own websites. IDX content updates automatically as listings change.

Most out-of-the-box IDX implementations create thousands of near-duplicate pages (same listings appearing on hundreds of agent sites), causing massive duplicate-content issues.

Why it matters for real estate SEO

Default IDX often torpedoes a site's SEO by burning crawl budget on duplicate listing pages. Organic IDX setups with canonicals, noindex rules, and unique neighborhood content prevent this.

Related guides

Related terms

Crawl Budget

Crawl budget is the number of pages Googlebot will fetch from your site within a given period.

Schema Markup

Schema markup is structured code added to a webpage that helps Google understand its content.

Backlink

A backlink is a link from another website pointing to yours, acting as a vote of confidence to Google.

Domain Authority (DA)

Domain Authority is Moz's 1-100 score predicting how well a website will rank in Google.

Need backlinks that signal real estate authority to Google? Our niche packages are built specifically for agents and brokers.