Ensuring intervention success: Assessing fit as an overlooked step of the implementation process.

Ensuring fit between a service and the implementing context is a critical but often overlooked precursor of implementation success. This commentary proposes five key considerations that should be evaluated when exploring fit: alignment with needs and metrics; alignment with organizational resources and capabilities; alignment with organizational priorities and culture; alignment with reimbursement mechanisms for long-term sustainability; and alignment with the regulatory environment. Successful uptake and implementation hinges on careful planning and, most importantly, appropriate fit between the service and the implementing environment.