Stories by Julie Bort

Rackspace, Dell push OpenStack cloud OS

Rackspace will help enterprises build private clouds using the OpenStack cloud operating system, the company announced Tuesday. Meanwhile, Dell is seeking enterprises and service providers for proof-of-concept OpenStack trials with its Dell PowerEdge C family of servers.

Cisco announces its highest level certification ever

For years, the coveted Cisco Certified Internetwork Expert (<a href="http://www.networkworld.com/community/cciebuzz">CCIE</a>)  was the highest, most difficult rank a network professional could achieve. No more. On Monday, <a href="http://www.networkworld.com/subnets/cisco/">Cisco</a> announced a new certification, the Cisco Certified Architect, which will become the rank above CCIE. The CCA will attempt to marry the networking engineering know-how of the CCIE with the business acumen of a MBA.

Ten tech start-ups that should matter

In 2007,we designated more than 90 start-ups as worth watching. After a second look, we picked these 10 as offering what matters most in the enterprise -- agility, seamless integration and pervasive connectivity.