In cancer care, there are emerging information and communication technology systems being developed, enabling real-time information sharing between patients and health professionals. This study explored health professionals' and patients' perceptions of their engagement with an information and communication technology system for pain management to understand the mechanisms that could support implementation into routine palliative care practice. This was a qualitative study, embedded within a randomised control trial, using semi-structured face-to-face interviews. Data were analysed using thematic analysis. The role of health professionals was a key component to patient engagement with the information and communication technology system. Where patients engaged with the information and communication technology system, both patients and health professionals reported benefits to system use in addition to usual care. Implementation issues were identified that can be used to guide future system development to support pain management in the context of routine clinical care in palliative care services. Where interventions are dependent on multiple providers, collaborative working and consideration of the context within which they are set are needed.