From language wars we now evolved to platform wars.
Here’s what I like about this new era of cloud computing: rather than the useless language wars of the old era (i.e. sun/java vs. msft/java-ish), we are now heading toward platform wars. Amazon will add some of the “full stackness” of Google’s, and Google will expand as well. And these battles are aimed at adding real value.
Microsoft, Yahoo, whoever else, will have to off similar capabilities, and new advantages.