BLS is fundamental to all cardiopulmonary resuscitation. Competence in Basic Life Support is a prerequisite for enrolment for all advanced-level training provided by the European Resuscitation Council. Basic life support (BLS) and, when possible, use of an automated external defibrillator (AED) is the first level of care for a person in cardiac arrest. During European Resuscitation Council (ERC) BLS/AED Provider courses, certified instructors will guide and support you in the learning process.