OK here we go, another catch word, what does it mean?

Respond to the visitors screen size or device…

(If we are using a mobile first development methodology this is much easier.)

What advantage does this give the average business?

• Appeal to the widest set of visitors as possible,  public communications offering needs to be 100% platform agnostic.
• The ability to share and leverage content from a variety of sources is the key improving  online presence and returns.
• Integrate your entire web presence with social media and commerce API driven features.

Does this mean my mobile apps are dead? No not by any means, but they will interface with the same cloud based services that run your responsive site.  Apps are still a great thing for targeted uses, of course the app we leverage is typically chrome or safari.