This microcredential will explore the various approaches to the treatment of breast cancer, focusing on three main categories: surgical treatment, systemic medical treatment (chemotherapy and endocrine therapy), and radiotherapy. Each of these areas plays a crucial role in the comprehensive care of individuals diagnosed with breast cancer. This microcredential will also explore aspects of delivering care that respects and appreciates the diversity among individuals living with breast cancer. Additionally, the concept of breast cancer clinical trials will be explored, highlighting their importance in advancing treatment options and improving patient outcomes. This microcredential is the third in a series of three corresponding to the unit of study 327 Principles of Breast Cancer Nursing.