Digital marketing is being widely employed to efficiently and effectively market products/services to achieve increased sales and generate higher revenues. It allows businesses to effectively communicate desired content to their consumers. Pay-per-click (PPC) is one such form of digital marketing. PPC is often acknowledged for the different advantages it offers, and at the same time, it is notably criticised for fraud and other issues associated with its use. The literature on this subject, although limited, has invested considerable efforts in unveiling the pros and cons of employing PPC as a marketing/advertising strategy. This paper reviews 50 publications on PPC advertising to synthesise their findings and arrive at a common ground for understanding the digital presence and impact of this form of marketing. Alongside discussing the findings, observed limitations and opportunities for future research have been identified and reported
