TY - CHAP AB - Abstract This chapter presents a summary of the literature on the influence of the Internet and other digital innovations on markets, consumers, and firms. The review leads to a list of topics in need of research in the general areas of big data, online and mobile advertising, consumer search, online privacy, online reviews, social networks, platforms for online transactions, and the impact of the Internet on retail markets, including multi-channel and omni-channel retailing. We discuss the big data approaches that have been applied to problems of targeting and positioning and suggest areas for further development of these approaches. We also discuss the emerging area of mobile advertising, which can further enhance targeting. On the consumer side, the evidence indicates that the Internet has greatly lowered the costs of search and access to retailers. Much of the consumer data are transmitted to sellers, and much of the online advertising is transmitted to consumers, through platforms, such as Google. We conclude that better models of competition among these platform firms are needed and that they need to be examined for anti-trust violations. While online retailing has grown rapidly, it still has a relatively small share of retail sales. Since sellers can combine the advantages of online and offline channels, it has been common for sellers to branch into multi-channel retailing. Given the increased availability of detailed consumer data, omni-channel selling, which emphasizes strategies for the various touchpoints that lead to a transaction, is an area for further development. VL - 16 SN - 978-1-78756-339-1, 978-1-78756-340-7/1548-6435 DO - 10.1108/S1548-643520190000016005 UR - https://doi.org/10.1108/S1548-643520190000016005 AU - Ratchford Brian T. PY - 2019 Y1 - 2019/01/01 TI - The Impact of Digital Innovations on Marketing and Consumers T2 - Marketing in a Digital World T3 - Review of Marketing Research PB - Emerald Publishing Limited SP - 35 EP - 61 Y2 - 2024/05/10 ER -