Growth Hacking is a Buzzword, it is one of those phrases that is turned out of Startup like; unicorn, freemium and pivot. What Growth Hacking really translates to is how do you make your business expand as quickly as possible, which is what every founder wants.
I was at a talk by Chris Out recently: the brains behind Rock Boost. The core 7 pillars of his Growth Hacking are the correct place to start for any business. It methodically, clearly and articulately lays out where you start laying out those points. Those in the innovation business might be more familiar with them. (Check out the website I would strongly recommend it to any startups).
Read the full article on medium: https://medium.com/edot/growth-hacking-your-market-is-people-95a1fbb3282f#.7vsj6u5ex