Prior research has studied extensively technology mediation in services. Yet, much of this work focuses on the consumer (or customer) viewpoint and there is a scarcity of research that focuses on the service provider perspective. By extension, there is little empirical work on how service providers experience and interpret technology use that is discretionary in nature (i.e., not imposed at an organisational/firm level). This study focuses on the context of healthcare and aims to unpack healthcare service providers discretionary use of mobile applications (apps). The aim of this thesis is to gain new insights on the discretionary use of technology in professional services by investigating its multifaceted nature. In doing so, I bring together the theoretical constructs of legitimacy, institutional work, and institutional logics of neo-institutional theory, role theory, as well as theories of professional identity construction to study healthcare service providers experiences. The emergent findings are structured upon three chapters (articles) and develop specific research questions that address the overarching aims and objectives of the thesis. In essence, this research highlights three core aspects of discretionary technology use; (a) how it is experienced by service providers in regards to the logics and rules of a given institutional context (macro level), (b) how it is approached by service providers based on changes in their roles in the organisation (meso level), and (c) how it is interpreted by service providers in relation to their professional identity (micro level).