“…Relevant Mahalingam and Ashokkumar (2020), Chaffey (2019), Kannan (2017), Capgemini (2015), Syme (2015), Kirkpatrick (2012), Jones et al (2011) 5 Easy Eze et al (2020), Alghizzawi (2019), Chaffey and Smith (2017), Durmaz and Efendioglu (2016), Charan and Dahiya (2015), Nguyen (2014) 6 Expert Advice Parab (2020), Dahiya and Gayatri (2018); Chaffey and Smith (2017); Charan and Dahiya (2015); Kusuma (2015); Bagchi (2013) 7 Easy Comparison Digital Marketing Institute (2020), Alghizzawi (2019), Dahiya and Gayatri (2018), Capgemini (2015), Nguyen (2014) 8 Customer Reviews Deloitte (2020), Dahiya and Gayatri (2018), Chaffey and Smith (2017), Charan and Dahiya (2015), Hausman (2014), Bagchi (2013) 9…”