Most of today's web maps are using the Web Mercator projection. A major issue of Web Mercator is the distortion of area sizes far from the equator.

In 2018 Bojan Šavrič, Tom Patterson and Bernhard Jenny published their work on the Equal Earth map projection, an equal-area projection for world maps. There is good support
for it in many mapping libraries and tools and cartographers use this projection regularly for world maps.

Equal Earth has the disadvantage, that it is not well suited for large-scale maps. So zoomable web maps have to adapt the projection according to the current view scale. Most of them do this already by switching between a globe projection and Mercator.
But for thematic maps a globe is a bad solution since you only see half of the world at once. OpenLayers has recently added support for reprojection of vector tiles which allows using a dynamic projection dependening on the current view.

This talk shows how to use the Equal Earth map projection for web mapping with different kind of data sources. It shows what can be already done with current technoolgy and discusses remaining obstacles.