Lesson observation is central to the process of teacher education. From their first experiences in schools, teachers become familiar with frequent observation. In their early days, almost every lesson will be observed, whether formally or informally, followed up by written or verbal feedback on their developing skills in the classroom. When they enter the profession as qualified teachers, the emphasis on lesson observation shifts to one of performance management, or appraisal. This chapter describes the way that the VEO app was embedded as part of one school’s performance management process. Capturing and discussing student voice from lessons was a valuable addition to the observation. Using VEO enhanced and enriched the process, allowing observer and observee to negotiate and reflect on the purpose and outcomes of the lesson observation as part of a process of continuous teacher development over the course of one school year. A model of video-enhanced teacher development for performance management is presented as an alternative to lesson observation driven by performativity.