

What’s the compatibility like? If someone visits your site using IE 11 does it work? How about Firefox 4.0, or Safari 6.1?
The place I used to work had those compatibility requirements. But they were also still mandating the use of IE 11 for all their corporate software. If you’re designing and developing for IE 11, you often get Firefox 4.0 and Safari 6.1 compatibility for free.
Still, it’s nothing like when I was in uni we needed to design websites with IE 6 compatibility, that will make you question your career choice.
Do you mean hdf5? I extensively used COGs (cloud optimised geotiffs) and NetCDF4 (based on hdf5) at work over the last 10 years. Both have their pros and cons.
The main limitation with geotiff is its pretty much only usable for layered 2D raster data.
NetCDF4 (hdf5) can set up frames of any dimensionality, you can have datetime axes, time series data, 100d ensemble data, etc.