Honua
// pillar 01 · compatibility

Speaks GeoServices REST.
Speaks OGC.
SDK parity by design.

Covered clients can stay on the scoped wire protocols and response shapes documented in the evidence ledger. Your code can stay on familiar SDK surfaces while Honua keeps the public contract and reshapes the infrastructure underneath.

URL & SDK mapping · scoped parity
Service endpoints
/arcgis/rest/services/Parcels/FeatureServer/0/rest/services/Parcels/FeatureServer/0
/arcgis/rest/services/Zoning/MapServer/rest/services/Zoning/MapServer
/arcgis/rest/services/NAIP/ImageServer/rest/services/NAIP/ImageServer
/arcgis/rest/services/Route/GPServer/rest/services/Route/GPServer
/geoserver/wfs · wms · wmts · wcs/ogc/wfs · wms · wmts · wcs
SDK · parity by design
@arcgis/core/Map@honua/sdk-esri-compat → MapCompat
@arcgis/core/views/MapView@honua/sdk-esri-compat → MapViewCompat
@arcgis/core/layers/FeatureLayer@honua/sdk-esri-compat → FeatureLayerCompat
@arcgis/core/Graphic · Symbol · Renderer@honua/sdk-esri-compat → matching Compat surface
// compatibility, in evidence

Tested in CI. Reviewed in public.

Compatibility isn't a marketing claim. Every supported surface ships with a public test suite or evidence doc. See the claims matrix for the wording rules that govern the numbers below.

GeoServices REST · partial parityPARTIAL
Drop-in where the scoped Esri-compatible surface is covered.

Honua's GeoServices REST surface targets FeatureServer, MapServer, ImageServer, Geometry Service, and GPServer. Parity is scoped per service — what's covered, what's pending, and what's deferred is recorded in the parity matrix and JSON data file in honua-server.

FeatureServersupported · gaps tracked
MapServersupported · gaps tracked
ImageServersupported · gaps tracked
GPServersupported · gaps tracked
Geometry Servicesupported · gaps tracked
OGC CITE conformanceSNAPSHOT
Standards, asserted in CI.

Honua's OGC conformance is captured in a CITE-evidence snapshot in honua-server. Counts below are passing assertions in the current published snapshot — exact, scoped, and audit-linked.

OGC API Features137 / 137
OGC API Tiles16 / 16
WMS 1.3.0199 / 199
WMTS 1.0.060 / 60
WFS 1.0.0162 / 162
WFS 1.1.039 / 39
Coverages · Records · Processes · STACsupported
SDK · parity by designEVIDENCED
Compatibility-by-design surface.

Each Honua SDK is shaped around familiar GIS workflows — not a fork. Conversion happens through the honua-migrate codemod on the JavaScript SDK today; other languages ship their parity surface and gain codemod coverage on the roadmap.

JavaScript SDKdeterministic 2D parity
Python SDKparity surface
.NET SDKparity surface
Mobile · .NET MAUIroadmap
honua-migrate codemod · JSshipped

// public wording rules · claims.html · CITE numbers track the snapshot in honua-server

// data sources

The databases & data sources Honua reads, writes, and serves from.

PostGIS as the operational store, the file and geodatabase formats your team already exchanges, and cloud-native formats on object storage for the workloads that don't want a database in the path.

01 · Relational PostGIS, MySQL, SQL Server, DuckDB.

Honua's operational store is stock PostGIS — your existing schemas, roles, and connection strings work as-is, no proprietary geometry type. MySQL, SQL Server, and DuckDB are supported as additional sources: connect, scan, and serve their tables alongside PostGIS — including DuckDB over GeoParquet on object storage.

PostGIS 3.x · PostgreSQL 14+primary store
MySQL · SQL Server · DuckDBadditional sources
RDS · Azure Database · self-hostedsupported
02 · File & geodatabase Import the formats your team already exchanges.

Operator-facing import path for the file and geodatabase formats real GIS teams move data in. Schemas, attributes, geometry, and spatial indexes come along. One-way migration today; details and parity coverage are documented per format.

Shapefile · GeoPackage · FileGDBimport
GeoJSON · KML · GML · WKT · CSVimport
FlatGeobuf · TinyWKBimport
03 · Cloud-native object storage Range-fetched, no database in the path.

For read-heavy workloads, Honua serves directly from cloud-native formats on object storage — columnar features, COG rasters, PMTiles maps, STAC catalogs. No proprietary tile cache, no server-side session, no per-row server round trip.

GeoParquet · COG · PMTilesserve direct
STAC catalogs & itemsserve direct
S3 · Azure Blob · MinIOany backend

// operator import paths documented in honua-server; warehouse pass-through tracked in the open backlog

// next

Drop Honua behind your existing clients.
Migrate the apps at your pace.