Sometimes, keeping up with technological change can seem all too much. What you really want to know is what it can do for your business. In putting together this special feature, our aim was to help you understand key technologies so you don't get left behind. We invited four experts - some who sell the products or services they've written about, some who write about them for a living - to choose a particular technology and pitch the case for how it can help a small business.
Click below to read each column: