You can publish your maps and data as hosted layers to ArcGIS Online. When you do this, ArcGIS Online takes care of hosting your layers and the data that populates them. Hence, these are called hosted layers. Web, desktop, and mobile apps can access your ArcGIS Online hosted layers from anywhere on the Internet if you choose to allow it. You can publish hosted layers directly from your desktop without installing your own server.
ArcGIS Online hosted layers are useful when you need to expose a map or dataset on the web, but you do not have your own GIS Server site. It's also an easy way to share certain maps with an Internet audience if your own GIS Server site cannot be made public.
Prerequisites to publish hosted layers
You must have the following to publish hosted layers to ArcGIS Online:
- An account that is part of an ArcGIS Online organization
- Privileges to create content and publish hosted layers
- An ArcGIS client (if you want to publish hosted layers from ArcMap or ArcGIS Pro)
Definition queries you apply to layers in ArcMap or ArcGIS Pro are also applied to the published hosted layers. However, all data is uploaded to ArcGIS Online. If you want only a subset of the data to be published to and stored in ArcGIS Online, you must export the subset of the data to another feature class and publish that.
Types of hosted layers
You can publish the following types of hosted layers:
Hosted feature layers support vector feature querying, visualization, and editing. Hosted feature layers are most appropriate for visualizing data on top of your basemaps. In web apps, hosted feature layers are drawn by the browser and support interactive highlighting, queries, and pop-ups.
See Publish hosted feature layers for more information.
Once you've published a hosted feature layer, you can create views of the data in the feature layer. Hosted feature layer views reference the same data as the hosted feature layer used to create the view, but you can apply different editing, sharing, and other settings to the view. See Create hosted feature layer views for more information.
Feature layer views
If you have publishing privileges and need a different view of your hosted feature layer beyond changing its style and presentation—for example, you want to apply different editing capabilities or share the data with different groups—you can create a hosted feature layer view from your hosted feature layer. A hosted feature layer view is similar to a copy of a layer but is more powerful because it allows you to control more than just how the layer is displayed. For example, you might create a hosted feature layer view when you need to support different editing capabilities for different groups of people. Many organizations need to share data with the public and simultaneously allow members within the organization to keep that data up to date. Hosted feature layer views provide a direct way to do this. When you publish your hosted feature layer, you can share it with particular members of your organization who need to edit it. Then, for the general public, you can create a hosted feature layer view that references the original hosted feature layer but with editing disabled. Because the two layers share the same data, as members edit the original hosted feature layer, the general public will see those changes immediately.
Hosted WFS layers are read-only, OGC-compliant views of hosted feature layers. A hosted WFS layer and the hosted feature layer from which you publish it share the same data and initial metadata.
See Publish hosted WFS layers for more information.
Hosted tile layers support fast map visualization using a collection of predrawn map images, or tiles. These tiles are created and stored on the server after you upload your data. Hosted tile layers are appropriate for basemaps that give your maps geographic context.
See Publish hosted tile layers for more information.
Vector tile layers
A vector tile layer references a set of web-accessible tiles containing 2D and 3D content and the corresponding style for how those tiles should be drawn. The combination of tile access performance and vector drawing allows the tiles to adapt to any resolution of the display, which may vary across devices.
See the Build and publish a vector tile package section of Publish hosted tile layers to learn how to create a hosted vector tile layer.
Hosted WMTS are OGC-compliant views of hosted tile layers. All hosted tile layers on ArcGIS Online that are shared with the public can be accessed using the OGC WMTS protocol. The publisher of the hosted tile layer does not have to perform any special operations to enable WMTS. To access a hosted tile layer using the WMTS protocol, open the layer's details page and open the URL for the tile layer. The page that opens contains a WMTS URL link to the WMTS capabilities document that can be used to access layer tiles in apps that support WMTS.
Hosted scene layers support fast map visualization of three-dimensional data using a collection of cached tiles.
See Publish hosted scene layers for more information.
Hosted elevation layers are imagery layers that have been rendered as cached image tiles in the Limited Error Raster Compression (LERC) format. They provide customized elevation surfaces in your scenes to provide heights for the 3D layers in your scenes.
See Publish hosted elevation layers for more information.
Hosted layer dependencies
Hosted layers have dependencies on the items from which you create them. For example, if you publish a hosted feature layer from a shapefile you uploaded, deleting the shapefile will prevent you from performing such operations as overwriting the hosted feature layer. If you publish a hosted feature layer from ArcGIS Desktop, a service definition file is created and added to My Content. You cannot delete the service definition file until you delete the hosted feature layer.
Similarly, if you publish other hosted layers from a hosted feature layer, you create a dependency between the layers. You can publish all of the following from a primary hosted feature layer:
- Hosted tile layer
- Hosted WFS layer
- Hosted scene layer
- Hosted feature layer view
These dependent hosted layers have a relationship with the hosted feature layer from which you create them.
- Hosted WFS and feature layer views reference the data in the hosted feature layer used to publish them; therefore, they are entirely dependent on the hosted feature layer for access to the data.
- Hosted tile layers are dependent on the hosted feature layer for certain functionality such as pop-ups.
- Dependent layers and their primary hosted feature layer must have the same owner. As an administrator, reassign ownership of the primary hosted feature layer first. When you do that, ownership of all dependent layers (and the file used to generate the primary hosted feature layer) will be owned by the same member.
- You must delete all dependent layers before you can delete the hosted feature layer from which you created them.
- You cannot set a field or feature definition on a hosted feature layer if it has a dependent hosted tile layer.
These dependencies extend to layers you publish from hosted feature layer views. You can publish a hosted tile layer or hosted scene layer from a hosted feature layer view. These dependent hosted layers are related to both the view and the hosted feature layer from which the view was created. You must delete the dependent hosted tile and scene layers before you can delete the hosted feature layer view.
The Created from value under Details on the hosted layer's item page tells you which layer or file was used to publish the hosted layer. The Published as and Other Views values indicate what other hosted layers have been published or views created from the hosted feature layer.
Clients that can use hosted layers
Hosted layers communicate through the well-known GeoServices REST Specification and can consequently be used by Esri and third-party apps. An easy way to view your services is through the map viewer, but you can also make your own app using the ArcGIS Runtime SDKs, configurable apps, or Web AppBuilder for ArcGIS. Other supported client apps include ArcGIS Explorer (online and desktop versions), ArcMap, and ArcGIS Pro.
Access to hosted layers
By default, hosted layers are private when you publish them and are only accessible to the person who published them. Hosted layers do not appear in search results and aren't part of any group by default. You can choose to make your hosted layers available to specific groups on ArcGIS Online, or you can even make them available to the general public. See Share items for more information.