The document summarizes a presentation given at the 6th International Conference on ICT for Language Learning. The presentation examined blended assessment in a corporate language learning context. It explored how interactions between learners, teachers, and machines help define blended assessment. The presentation analyzed assessment interactions through an ethnographic lens informed by actor-network theory. Findings showed how blended assessment is performed through dyadic interactions between teachers and learners, teachers and machines, and learners and machines. Future work was proposed to develop a framework integrating ethnographic understanding with psychometric testing approaches to assessment.