Great question.
To start out I'll say be careful with trying to implement the new thing you have read about. Just because you just came across this approach doesn't necessarily make them good for your business.
Lean startup methodology calls for new business minimal viable product launch. You didn't say why type of business you are in so this might be the right perspective for you.
What you mentioned tho is Growth Hacking. You are in a phase of business where can no longer grow it, I actually focus on serving this demographic. Part of how I deliver my services is through growth hacking.
Your web developers need to be savvy enough to implement marketing tactics 101 online as well as understand your business to make the appropriate changes, create landing conversion pages, a/b test different demographics, add or remove features, properly leverage the right social media with potential actual interested individuals.

look through my previous answers to find out more ways to grow a business. Or give me a call as this is a loaded question, and you didn't give much specific.