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Developer Tenets

· 6 min read
Eric Godwin
Principal Engineer, Overtureeric@overturemaps.org
Amy Rose
CTO, Overtureamy@overturemaps.org

Open data projects like Overture are built across time. Contributors come and go, member companies rotate people in and out, and the builders of today are extending the work of those who came before them. Part of the work of Overture is documenting how we work, to help new contributors quickly get up to speed and to capture the immense technical and organizational knowledge built up over the past few years.

collaboration OG Overture developers from multiple organizations taking a break from coding for some analog collaboration and documentation, February 2024.

Our contributor base itself is wide. People bring code, documentation, data analysis, quality checks, and more to the project, and they come from an incredibly diverse range of organizations: big tech, scrappy startups, nonprofits, government agencies, and open data communities. This diversity is a strength, giving us a wide range of perspectives and skills. It can also create friction, since these organizations bring different goals, tools, constraints, development velocities, and cultures.

Rather than subjecting our contributors to a strict set of engineering guidelines, we want to communicate a set of higher-level values. These values should be reflected throughout the development cycle, in the documentation we write and the pull requests we post. Beyond giving developers flexibility, this approach is AI-friendly: skills and agents can use this document as broad context for testing intent.

The "Developer Tenets" below are adapted from our internal Overture operations guide. We're publishing them because they're the kind of thing that benefits from being out in the open, where contributors and downstream users can see how we think about building Overture, at least from the engineering side. The tenets were defined by the developers, and Claude helped expand them with examples and code review guidance, i.e. "what to check." That pattern (humans setting direction, AI in a supporting role) is central to how we operate.

2026-05-20 release notes

· 3 min read

Overview

The 2026-05-20.0 release of Overture data and v1.17.0 of the Overture schema are now available. This month we added BrightQuery as a new POI data provider, introducing more than 250,000 new places in the United States. We made minor changes to the schema.

Deprecations

The categories property in the places schema has been deprecated and will be removed in the September 2026 release, replaced by the new basic_category and taxonomy properties. All three properties will be available until then to ease the transition for our users. The taxonomy documentation is here.

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined in our docs. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at community@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2026-05-20.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2026-05-20.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2026-05-20.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2026-05-20.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2026-05-20.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2026-05-20.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

PMTiles

Amazon S3:

s3://overturemaps-extras-us-west-2/tiles/2026-05-20.0/

2026-04-15 release notes

· 3 min read

Overview

The 2026-04-15.0 release of Overture data and v1.16.0 of the Overture schema are now available. You can access the datasets, changelog, GERS registry, bridge files, and PMTiles on AWS and Azure at the paths listed below.

Deprecations

The categories property in the places schema is now deprecated and will be removed in the June 2026 release, replaced by the new basic_category and taxonomy properties. All three properties will be available until then to ease the transition for our users. The taxonomy documentation is here.

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at community@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2026-04-15.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2026-04-15.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2026-04-15.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2026-04-15.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2026-04-15.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2026-04-15.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

PMTiles

Amazon S3:

s3://overturemaps-extras-us-west-2/tiles/2026-04-15.0/

2026-03-18 release notes

· 4 min read
note

The bbox column fields (bbox.xmin, bbox.ymin, bbox.xmax, bbox.ymax) have changed to the Parquet physical type DOUBLE (64-bit floating point) instead of 32-bit FLOAT. This change works around an outstanding Athena bug affecting queries on nested float fields.

Overview

The 2026-03-18.0 release of Overture data and v1.16.0 of the Overture schema are now available. You can access the datasets, changelog, GERS registry, bridge files, and PMTiles on AWS and Azure at the paths listed below.

What's new?

The data changelog now includes columns_changed, capturing which properties changed, per feature. Also in this release, we've made several improvements to the pipeline architecture of the transportation theme, including adding several data quality improvements and fresher source data. This architectural change also lays the groundwork for integrating additional road network sources into Overture in the near future.

Deprecations

The categories property in the places schema is now deprecated and will be removed in the June 2026 release, replaced by the new basic_category and taxonomy properties. All three properties will be available until then to ease the transition for our users. The taxonomy documentation is here.

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at community@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2026-03-18.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2026-03-18.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2026-03-18.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2026-03-18.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2026-03-18.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2026-03-18.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

PMTiles

Amazon S3:

s3://overturemaps-extras-us-west-2/tiles/2026-03-18.0/

The Day Explorer Turned Pretty

· 6 min read
Jonah Adkins
Cartography Lead, Metajonahadkins@meta.com
Dana Bauer
Technical Product Manager, Overturedana@overturemaps.org

When we launched Explorer back in the summer of 2024, we described it as an "x-ray data inspector" and made a deliberate choice to show everything at once — all themes, all feature types, all properties — with minimal cartographic polish. The goal was transparency, not beauty. We wanted you to see the data as it really is.

That was the right call for a launch. But as Explorer has matured and more people have come to rely on it, we've learned that "useful data tool" and "thing you actually enjoy looking at" don't have to be mutually exclusive. The person most responsible for closing that gap is Jonah Adkins, Cartography Lead at Meta. "I didn't have the intention of just redoing the whole thing," Jonah says, "but I was curious what I could get Claude to do." He came up with a plan, and it was, in his words, probably 5 to 6 hours of work total over a few days. By end of day one, Explorer looked like a different site. Dana let him keep going.

("I would have felt better with a heads up," Dana says. "But it's so pretty now.")

Open in full screen ↗

2026-02-18 release notes

· 4 min read

Overview

The 2026-02-18.0 release of Overture data and v1.16.0 of the Overture schema are now available. You can access the datasets, changelog, GERS registry, bridge files, and PMTiles on AWS and Azure at the paths listed below.

What's new?

In this release, we added a new admin_level property to the divisions schema to represent a division’s position in its country’s hierarchy, e.g. 0, 1, 2. We also updated our places guide with more information about our recent taxonomy work, including mappings across the basic_category, taxonomy, and categories properties. Last but not least, we updated our address data for Norway and made small improvements to our address schema thanks to user feedback from Johannes-Andersen. Keep the comments and discussions coming!

Deprecations

The categories property in the places schema is now deprecated and will be removed in the June 2026 release, replaced by the new basic_category and taxonomy properties. All three properties will be available until then to ease the transition for our users.

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at community@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2026-02-18.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2026-02-18.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2026-02-18.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2026-02-18.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2026-02-18.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2026-02-18.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

PMTiles

Amazon S3:

s3://overturemaps-extras-us-west-2/tiles/2026-02-18.0/

Overture Has Fully Embraced STAC

· 9 min read
Dana Bauer
Technical Product Manager, Overturedana@overturemaps.org

Over the past few releases, the Overture engineering team has gone from generating a STAC catalog as an ad hoc release artifact to making STAC the backbone of our tooling. Now our Python client, Explorer, internal QA tools, and data pipelines all use Overture STAC to stay in sync with the latest release. We did this to improve our own workflows, but we think it'll make things easier for everyone.

Here's our STAC, from the top. https://stac.overturemaps.org/.

{
"type": "Catalog",
"id": "Overture Releases",
"stac_version": "1.1.0",
"description": "All Overture Releases",
"links": [
{
"rel": "root",
"href": "./catalog.json",
"type": "application/json"
},
{
"rel": "child",
"href": "./2026-01-21.0/catalog.json",
"type": "application/json",
"title": "Latest Overture Release",
"latest": true
},
{
"rel": "child",
"href": "./2025-12-17.0/catalog.json",
"type": "application/json",
"title": "2025-12-17.0 Overture Release"
}
],
"latest": "2026-01-21.0",
Shoutout!

Huge thanks to Ben Clark for getting Overture started on our STAC journey back in 2024. Watch his talk on STACing GeoParquet at the 2025 Cloud Native Geospatial Forum. And thanks to Jennings Anderson for fully realizing Overture's STAC vision and getting us where we are today.

2026-01-21 release notes

· 2 min read

Overview

The 2026-01-21.0 release of Overture data and v1.15.0 of the Overture schema are now available. The datasets and release artifacts are available as GeoParquet files stored on both AWS and Azure.

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at info@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2026-01-21.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2026-01-21.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2026-01-21.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2026-01-21.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2026-01-21.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2026-01-21.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

2025-12-17 release notes

· 4 min read

Overview

The 2025-12-17.0 release of Overture data and v1.15.0 of the Overture schema are now available. The datasets and release artifacts are available as GeoParquet files stored on both AWS and Azure.

What's new?

We added a new taxonomy property to our places schema this month, as part of our ongoing initiative to redesign the places category system. The new property offers a streamlined and logical structure with consolidated primary and alternate names and a hierarchy that makes clear the parent/child relationship between categories.

In October, we introduced the basic_category property. That property corresponds 1:1 to the primary place name in the new taxonomy property. (It also maps to the primary name in the original categories property.) The hierarchical paths in taxonomy support deeper and more logical structures. For example, in the restaurant branch, you can see a clear progression from very broad to very specific category names: restaurant > asian_restaurant > east_asian_restaurant > chinese_restaurant > cantonese_restaurant. This kind of structure makes it easier to aggregate and display POIs in meaningful ways.

The original categories property, with more than 2100 category names, will remain in the schema for the next several months so that users can compare the old system to the new taxonomy.

Examples:

  1. Original categories system
properties:
categories:
primary: greasy_diner
  1. basic_category mapped to primary category in original categories system
properties:
basic_category: casual_eatery
categories:
primary: gas_station_sushi
alternate:
- bait_and_tackle
  1. New taxonomy
properties:
basic_category: casual_eatery
taxonomy:
hierarchy: [food_and_drink, restaurant, casual_eatery, gas_station_sushi]
primary: gas_station_sushi
alternate:
- gas_station
- sushi_restaurant

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at info@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2025-12-17.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2025-12-17.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2025-12-17.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2025-12-17.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2025-12-17.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2025-12-17.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/

2025-11-19 release notes

· 3 min read

Overview

The 2025-11-19.0 release of Overture data and v1.14.0 of the Overture schema are now available. The datasets and release artifacts are available as GeoParquet files stored on both AWS and Azure. This is a minor breaking change release.

What's new?

We added a roller_coaster class to our schema this month. Buckle up because next month we're adding rollercoaster data!

Rollercoasters!

Getting the data and release artifacts

You can access this month's data and release artifacts by following the process outlined here. The paths to the data and release artifacts are listed below. We encourage you to ask questions and provide feedback on the Overture Maps Discussion forum on GitHub. You can also file issues and report bugs in our data and schema repositories. If you have a suggestion for a new dataset or if you have data you'd like to contribute to Overture, you can email us at info@overturemaps.org. We’d love to hear from you.

Release data

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/release/2025-11-19.0/

Amazon S3:

s3://overturemaps-us-west-2/release/2025-11-19.0/

Data changelog

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/changelog/2025-11-19.0/

Amazon S3:

s3://overturemaps-us-west-2/changelog/2025-11-19.0/

Bridge files

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/bridgefiles/2025-11-19.0/

Amazon S3:

s3://overturemaps-us-west-2/bridgefiles/2025-11-19.0/

GERS registry

Microsoft Azure:

az://overturemapswestus2.blob.core.windows.net/registry/

Amazon S3:

s3://overturemaps-us-west-2/registry/