Information technology and its use have become an important factor in the development of various sectors of the economy, science, education, and transport. The taxi market is one of the industries that has experienced a significant impact of digitalisation. The introduction of digital (information) technologies, the emergence of web applications for ordering transport, changes in consumer preferences, and increased competition have led to significant changes in this sector. The purpose of the article is to analyse and study the problems of developing software for a relevant web application (as an element of digitalisation of processes in the taxi market) and its use to optimise the business processes of a taxi service and increase the level of satisfaction (comfort) of customers who make an online taxi order and receive the corresponding transport service. The research methods of the study are the main methodological approaches and technological tools for developing web applications. These methods include, in particular: systemic and comparative analyses to identify the features of creating scalable and high-performance web applications; the method of expert assessments, which involves analysing literature and information resources, conducting interviews and surveys of experts, as well as the processes of developing and testing scalable and high-performance web applications. The novelty of the study is the analysis of modern technologies for developing platforms for supporting business processes in the taxi market, the results of which can be used to develop an in-house software product for supporting taxi services, which can become a full-fledged assistant to the user in obtaining the appropriate transport service for passenger or freight transportation. The conclusion of the study is to determine the impact of digitalisation on the taxi market. The paper analyses the state of the taxi market in Ukraine, reviews the main modes of operation of taxi services, and highlights the main transformations that the taxi market has undergone as a result of digitalisation and the use of relevant information technologies. The paper identifies the main success factors and problems of the taxi market in the context of digitalisation and proposes solutions to increase the competitiveness of taxi services, including, in particular: improving existing or developing new digital platforms for the provision of services by taxi services; adapting existing web services to changes in consumer preferences; adapting business processes of taxi services to changes in consumer preferences. The author’s web application “Taxi Service Search System” is described as an element of digitalisation of the taxi market. Further ways to improve the web application “Taxi Service Search System” are identified.