This book provides insights in to how high quality learning environments in Early Childhood Education and Care (ECEC) develop, and how competent systems can support this. It builds on the knowledge that quality early environments shape the wellbeing and development of the child, and explores how communities of professional practice that support quality development are built. Acknowledging that the conditions for providing high quality pedagogical work depend not only on the individual teacher, but also on collaboration and organizational and professional development. The book draws on a range of theoretical frameworks and research that underline competent systems rather than individualized learning as a path to improve workforce quality and professionalization in the field of ECEC.