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Using ArcMap 10.8.1, I can display layers stored on ArcGIS Online using the Add Data dropdown:

enter image description here

When I subsequently select the ArcGIS Online option, I get a smorgasboard of layers that ESRI and others have made available for display in my ArcMap session:

enter image description here

But I'm also aware of an ESRI website called the ArcGIS Living Atlas of the World, that claims to be "...the foremost collection of geographic information from around the globe. It includes maps, apps, and data layers to support your work."

That sounds suspiciously like the aforementioned ArcMap ArcGIS Online!

So what are the differences (if any) between the ArcMap ArcGIS Online layers and ArcGIS Living Atlas of the World? Do they contain the same data? Is one a subset of the other? If they are different, why can't I access the Living Atlas from the ArcMap Add Data dropdown?

A Google search turned up nothing; nor did I find any distinguishing description at the ESRI site.

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    A 1/5th answer: Living Atlas is data served via ArcGIS Online. I'll point out that window you show is incredibly old. And it hasn't been updated to leverage the newer pieces of ArcGIS Online. I'd actually bet the view you see hasn't changed since it was added to ArcMap in probably 10.1 or 10.2. – KHibma Aug 21 at 17:01
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They are the same layers. ArcGIS Online is basically Esri's cloud hosting and online service platform. You can host your own imagery and basemaps there if you would like. The living Atlas is a collection of Basemaps and information that is curated and mainted by esri. Sort of like a movement to have a continually updated basemap. The living atlas layers are hosted on ArcGIS online.

The ArcMap interface is older and doesn't specify a distinction between the two. For example if you search world imagery in the ArcGIS online Search within arcmap it should bring up the living atlas World imagery which is also the same imagery from the add base map option.

if you are ever confused about the source or the data, you can always click the details and it will bring up the information within ArcGIS online. For example here is the link to world imagery on ArcGIS online.

https://www.arcgis.com/home/item.html?id=898f58f2ee824b3c97bae0698563a4b3

enter image description here

This is the imagery form the add basemap option. It is part of the living atlas, you can see the living atlas tag, and you can search for it from Add from ArcGIS online. all the same data.

TLDR: ArcGIS Online is the platform and Living Atlas is a subset of curated data that lives on that online platform.

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  • Your answer made a lot of sense, and I think that I now get the concept. However, I still haven't found a way, using ArcMap > Add Data From ArcGIS Online, to search for and select only Living Atlas data. Entering the search term "Living Atlas" doesn't return the desired selection. Further, when I review the Imagery description tab (for example), it doesn't mention Living Atlas. How did you know that Imagery was also part of Living Atlas? When I click your link the resulting web page stalls, shows only the throbbing ESRI blue bars; nothing else ever appears. – Stu Smith Aug 28 at 15:26
  • Sure, glad it helped you. I edited my original answer to show a screen shot of the tag on the imagery feature service if the link wasn’t working for you. I don’t think there is a way specifically to search for only living atlas content through the Add Data from AGOL in ArcMap. That add from AGOL is older than Living Atlas (I think, don't quote me) hence the lack of support. If you want living atlas only stuff it would likely be easier for you to go to their website and pull in the layers from there. but to search for a keyword add from AGOL is great. – Ben Sep 1 at 15:24
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The language I would use to differentiate between the two is that one is a Commercial Solution, the other is an Implemented System (you could argue my terminology here as well).

ArcGIS Online is a cloud hosted GIS Content management solution, that can be used different organisations.
That is -

  • Its in the cloud
  • It publishes content which consists of map services (layers), apps, analysis tools, downloadable datasets etc.
  • Has security mechanisms such that only content that you want available to selected users will be available.

So a practical example could be a mining company hosting and publishing data as Feature Services, that are available to be consumed as layers into ArcMap or web mapping solutions, specific to their organisation. No one outside the organisation can see these content items. Another example could be a government department hosting downloadable utility data available for download by the wider public community. With your specific example, when you 'Add data from ArcGIS Online' you would also normally see datasets/maps/content that are being published by your specific organisation that you are currently working in. Or - public content such as what you are showing above.

Living Atlas of the World - is what I would describe as a specific custom Data Catalogue and Spatial data publication system. Its purpose for an end user is to enable easy searching of data,maps and apps (ie: Spatial content! as above with ArcGIS online). And its all Public. So anyone can use it....Its also designed for system administrators to catalogue and publish data/maps/apps in a nice neat way. In your example, there is no 'Add Living Atlas of the world' button inside of ArcMap because its custom.

One of the differences between the two is that:

  • ArcGIS Online is a commercial solution provided by ESRI, (just like how ArcMap is a solution. )
  • Living Atlas is an example of that solution (and other technology ) being put into practice (ironically by ESRI).

A comparative example could be said that if ESRI sold you ArcMap you would just get the software. And then if ESRI was publishing ArcMap MXD's that you could download, which had all layers and data with them and searching capability and they called it the 'ArcMap Living Atlas' - then that would be a comparative example.

To your specific questions:

  • Do they contain the same data - Yes - But not 100% like for like....... Some data may be on Living atlas, but not in ArcGIS online, and vice versa. Depends on how its being published.

  • Is one a subset of the other? Sort of. Living Atlas is (probably) using ArcGIS Online solution to host a lot of its content. You could say that the Living Atlas system uses the technology solution 'ArcGIS Online'. But it would also use other technology solutions together to make the system.

  • If they are different, why can't I access the Living Atlas from the ArcMap Add Data dropdown? - ArcGIS Online, being a commercial solution, is consistent technology... That is, if I buy it, you buy, its the same underlying technology which means that ESRI are able to build a 'Add Data from ArcGIS Online' button into other solutions knowing that ArcGIS Online everywhere is the same technology. But the Living Atlas is essentially a custom solution, one example of many thousands from around the world (data.gov.au is another comparative public example). Each of these are a website that has been deployed by an individual organisation, which means each site is different in its technology implementation........ If that organisation wanted a feature inside of ArcMap (or any software for that matter) then they would need to build it, for that specific site.

Unfortunately ESRI are quite fluid and dynamic with their solutions and so it can be a bit confusing sometimes. Terminology is also inconsistent across industry (some people call it a portal, some an SDI, some a catalogue, some a content management system etc etc) so your confusion is not unwarranted!

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