Microsoft joins to the Cloud Computing's war

As it is expected, some exciting news have been announced in PDC2008.
One of the most surprising announcement is the launch of Windows Azure and Microsoft Office Web.
With these, it is clear that Microsoft shift their efforts to cloud computing technologies. In fact, it joins to the war of cloud computing where other great IT companies are already struggling from long ago:

• Amazon: the first company to sell cloud computing as a service (Amazon EC2, Amazon S3, Amazon Simple DB, ...)
• Google: the leader of cloud computing. Leaving aside the familiar systems like Hadoop and Google Apps, this year they have launched Google App Engine
• HP/Intel/Yahoo cloud computing, consisting of 6 clusters x 4000 processors for each one
• ... among othersh
  

Now, we can include Windows in this list. Undoubtedly, Cloud Computing will be the most interesting market to conquer.

It is Windows in time to consolidate and beat the other systems already in place?

Sure that we will be a luxury spectators of the most important 'technological war' that has ever seen... and it is supposed that the two major fronts fighters will be, of course, Google and Microsoft.