Tech Explainer: Five challenges for publishers adopting HTML5

TheMediaMuch of the coverage of HTML5-based digital products built by publishers has centred on its lean, flexible development, cost benefits and usability.
Web-based apps, so we've heard, will save money on digital production costs, free publishers from the tyranny of native applications (and therefore the App Store) and enable publishers to create new complex and beautiful products better suited to multiple uses and myriad devices.
(If you're not familiar with the basics of HTML5 I recommend reading our explainer piece which you can find here).
So far, so promised land - but what are the disadvantages for publishers adopting HTML5?

Browser support

The continued use of older versions of browsers is a constant thorn in the side of developers, meaning they have to check how their software/website runs on a plethora of slightly different environments. However, with HTML5 that could become even more severe, as many elements of HTML5 simply won't work with some older PC/desktop browsers.
The main issue is with versions of Internet Explorer before number 9 which aren't compatible with HTML5 at all. Acccording to Stat Counter, more than 11 percent of internet activity worldwide comes through Internet Explorer 8 or earlier. ..
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