Slide 4-0
We began with maps inside the Web - but now, we imagine the Web itself as a map.
This section is about how we move from formats to vision, from isolated standards to shared collaboration.
Let's explore how the Web and Geo worlds can finally connect on common ground - From Maps in the Web, to the Web as a Map.
Slide 4A - Shared Aspiration, Different Scale
We share the same aspiration as Peter -
the idea of making maps a first-class citizen of the Web.
There is no disagreement on that goal.
However, our vision differs in scale.
MapML aims to bring maps into the Web.
It enables map data and map services to be handled in a standardized way
within individual web pages or websites.
In contrast, the Hyper-Layering Architecture aims to map the Web itself.
We envision the entire Web as a single, giant map -
a “One Web Map,” where all information and services
can be connected through the common context of space.
This vision, as explained earlier, arises from a very real and urgent social need today.
Slide 4B - Lesson from History: The Trap of Over-Standardization
We must be careful about trying to define a complete format for maps on the Web.
We once tried it ourselves - with HLA 1.0, also known as SVGMap -
defining everything inside SVG: map structure, projection, zooming, and more.
It was powerful, but it became a closed system, unable to evolve with the Web.
And we've seen this pattern again and again in the geospatial world.
It often starts with one open format - and soon multiplies:
raster tiles, vector tiles, PMTiles, GeoJSON, and countless others.
Each one demands its own parser, renderer, and security model,
and the maintenance burden snowballs beyond sustainability.
We learned from that bitter experience.
So with HLA 2.0, we changed course and created LaWA - Layers as Web Apps.
Instead of enforcing one universal format, each layer is now an independent Web app -
meaning it can use any data format or API internally,
and still be freely combined and interoperable with others.
The Web should not decide everything.
It should accept and connect everything.
That is the foundation on which sustainable evolution can happen.
Slide 4C - Toward Collaboration: Beyond Formats
First, I want to emphasize that our intention is not competition.
The aspiration of “making maps first-class citizens of the Web”
is something Peter and I deeply share.
However, there is a difference in the scale of our vision.
The Hyper-Layering Architecture is not only about how to represent maps within HTML.
It aims to understand and connect the entire Web itself
through the common context of maps.
So, I'd like to ask everyone here - Peter, and all members of the Exploration IG -
can you also embrace this vision such as “One Web Map”?
A vision where every Web resource can be linked and seen
as part of a single, open, spatial network -
a Web we can literally read as a map.
If your answer is yes, then what we are discussing here
is not just about formats or APIs,
but about shaping the future of the Web itself.
Slide 4D - Toward Collaboration: Recognizing Shared Abstractions
Now, moving from vision to collaboration -
both MapML and HLA share a similar goal at a highly abstract level.
First, we agree that the Web should have a common geospatial canvas -
a space for graphical content that represents geospatial information in two dimensions.
Whether that takes the form of a