LINE is an instant messaing app operated by Line Corporation, a Japanese subsidiary of South Korea's NAVER Corporation.

This best practice report seeks to bring clarity to the conundrum of how marketers can be calculating the ROI of their digital marketing investments, within both B2B and B2C industries. It will look at the latest trends emerging in ROI within the context of digital marketing and consider the pros and cons of the various approaches, methodologies and frameworks being used. It will also discuss the key challenges marketers face when it comes to putting ROI into practice and how these are overcome. The inclusion of four brand cases studies will also help to bring to light some of the lessons and insights being shared.