This is a great infographic from CBInsights highlighting how offline retailers are leveraging technology to fight back against the online onslaught. 

Omnichannel continues to be one of the biggest growth areas in retail. Many of the most successful players are undergoing a fundamental restructuring of their businesses to meet changing consumer requirements. 

This has driven a wave of M&A as the major agencies and consultants have positioned themselves to support this transition. Acquisitions include Dentsu acquiring eCommera and WPP acquiring Salmon.