The aim of the paper is to present an insight into the challenges raised by digitalized and data-driven markets to competition policy and enforcement in the Big Data era. Focusing on the assessment of information exchange in the digitalized environment, traditional risk factors are analyized and it is argued that new risk factors can be identified. The paper provides an overview of relevant recent Hungarian case-law to examine the role of information exchange, taking place in a data environment that offers an increased amount of up-to-date and relevant market information for analysis. Further, the paper summarizes the enforcement responses to the demandside challenges raised by online platforms, user interfaces applying new approaches and practices that can directly influence consumer behavior. The consequence is drawn that the extended economic and IT-related argumentation may affect the nature of proceedings and some new phenomena, as the role of secondary intermediaries, integration of online and offline market segments open new fields for assessment.