Publish Vector Tile Service on ArcGISOnline - all or nothing?

[NathanMellor]

I want to publish a vector tile layer on ArcGISOnline. 

I'm referring to this:

Publish hosted vector tile layers—ArcGIS Online Help | ArcGIS 

So if I want to publish a Vector tile service that covers the planet, am I required to have one huge .vtpk that covers the planet at once? 

Is there any possibility of uploading a continent or country at a time?

[RussRoberts · Accepted solution]

Yup you could publish up individual vector tile layers covering Continents in one and Oceans in another. Then you would just follow the steps in this link to create a multiple layer basemap here: Choose basemap—ArcGIS Online Help | ArcGIS 

[NathanMellor]

Thank you. 

I guess I usually think of multilayer maps are ones that have layers on top of each other. 

Am I thinking correctly that once I combine these into a basemap, it can be addressed as one map in the Javascript API and Runtime mobile SDKs? Without any performance degradation?

[RussRoberts]

With the 4.x API and Runtime 100.x can read just the web map item id with the multilayer basemap you created in the Map Viewer. I have not tested this exact scenario out with different APIs so I can't comment on what the performance difference could be.