“…What is agreed upon is that ECEC quality can also have a long-term impact on children’s development and well-being [ 8 , 9 ] and that this quality concerns both structural variables (like the number of peers in the group and the ratio of adults to children) and process variables, which are instead related to the quality of relational exchanges [ 10 ]. Educators offer a more supportive, sensitive quality of caregiving when there are favorable structural variables, such as being able to work in small groups [ 10 , 11 , 12 , 13 ]; however, a significant quantity of research suggests that it is not only a high-quality organization that facilitates the development of good relationships, but rather that the quality of the child-educator relationship is itself a key aspect of the quality of the educational service [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. An in-depth analysis of the impact of the relationship with a professional caregiver on infant development is therefore essential, in order to offer all children a solid start in life, through quality care and education.…”