Mac has 24 years of experience with networking and virtualization.

Mac started and served as the Chief Architect of the zCloud Innovation team, became the WebSphere CTO for Cloud Computing, and then CTO for Cloud Partnerships and Client Innovations within IBM Corporate Strategy. Mac's designs and innovations have seen him recognised as an IBM Master Inventor, an IBM Distinguished Engineer, and appointed as a member of IBM’s prestigious Academy of Technology.

As Director and CTO - Cloud Portfolio for IBM Global Technology Services Mac led the technical due diligence for the SoftLayer acquisition and the creation of IBM’s new Cloud Services Division where he now serves as Director of CloudFirst Inovation and CTO.

Mac is a co-author of the Springer’s Handbook of Cloud Computing, and a graduate of Clemson University with a Masters of Science degree in Mathematical Sciences.