Dell, which bought outsourcer and data-center-services provider Perot Systems in 2009, has 36 data centers some of which offer SAAS applications but not, so far, flat-out cloud-platform services.
If you're thinking neither Dell nor Microsoft's announcements are particularly exciting, you're right. One vendor offering IAAS and PAAS is unusual, but hosting or outsourcing vendors allow the same thing on rented machines. Supporting them is more DIY than Dell will probably offer, but it's possible.
Extending Systems Center to provision VMs on Azure -- and let users do the same -- is also another step forward, but not a terribly big one. If it could do the same for other platforms as well it would be a lot more compelling.