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Overture provides free and open map data

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Who is Overture for?

Overture is powering current and next-generation map products by creating reliable, easy-to-use, and interoperable open map data. Our data supports developers who build map services or use geospatial data.

Why Overture?

Collaborative Map Building

Sourcing and curating high-quality, up-to-date, and comprehensive map data from disparate sources is difficult and expensive.

Overture aims to incorporate map data from multiple sources including Overture Members, civic organizations, and open data sources.

Global Entity Reference System

Multiple datasets reference the same real-world entities using their own conventions and vocabulary, making them difficult to merge and combine.

Overture Maps will simplify interoperability by providing a system that links entities from different data sets to the same real-world entities.

Quality Assurance Processes

Map data is vulnerable to errors and inconsistencies.

Overture Maps data will undergo validation checks to detect map errors, breakage, and vandalism to help ensure that map data can be used in production systems.

Structured Data Schema

Open map data can lack the structure needed to easily build map products.

Overture will define and drive adoption of a common, well-structured, and documented data schema to create an easy-to-use ecosystem of map data.

Events

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Events

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  • April 2026

  • Mon 13

    STL TechWeek 2026

    April 13 - April 17

    The Overture Maps Foundation team is heading to St. Louis for the 4th Annual STL TechWeek, taking place from April 13–17, 2026. Connect with Overture Maps team there! As a...

  • Tue 14

    Open Source in Finance Forum Toronto

    April 14

    The Overture Maps Foundation is headed to Open Source in Finance Forum Toronto 2026 to join leaders from across financial services, technology, and open source.

  • Tue 21

    Overture Member Summit 2026

    April 21 - April 23

    Overture Member Summit is where our members come together to exchange ideas, build connections, and drive Overture’s mission forward.

  • Mon 27

    Geospatial World Forum 2026

    April 27 - May 1

    Theme: Sovereignty, Economy & SocietyDates: 27 April – 1 May, 2026Location: RAI Amsterdam Overture Maps Foundation will be onsite at Geospatial World Forum 2026 with a dedicated booth presence, joining...

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Join this open map data project to ensure that Overture supports the features and use cases you care about!

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  • About
    • Who We Are
    • Members
    • Working Groups and Task Forces
    • FAQs
    • Contact Us
  • Resources
    • Global Entity Reference System (GERS)
    • Open Data Sources & Partners
    • Insights and Papers
    • Case Studies
  • News
    • Announcements
    • Blog
    • Events
  • Data
  • Docs
  • Become a Member
  • twitter
  • bluesky
  • linkedin
  • github