It's abundantly clear that virtualization and cloud are dominating the IT professional landscape in 2013, but Microsoft and VMware aren't the only players in this space. How do you learn the ins and outs of public cloud services? How do you develop the skills to create hybrid environments, if not by trial and error? How do you demonstrate to a would-be employer that you have the chops to do these jobs? Michael Steinhart considers whether tech certifications help in this regard.