Critical quality attributes (CQAs) of biologic drug products can be affected by multiple factors throughout the product lifecycle, including the container closure and delivery systems. Diane Paskiet, Director of Scientific Affairs at West Pharmaceutical Services, discussed containment and delivery system compatibility with biologic drug products along with regulatory considerations in her presentation Establishing Safety of Container Closure and Delivery Device Systems at the PepTalk 2017 conference. Evaluating potential impacts early, holistically, and throughout bioprocessing can facilitate decisions at each step that will minimize risks to CQAs and safety.