Analysed in this chapter are the characteristics of two main integration processes that Italy has experienced. Firstly, the country’s unification as a nation more than 150 years ago. Secondly, and more recently, together with other EU Member States, the constitution of a Legal Order. In both cases, the integration process is not meant to be homogeneous as far as various entities and activities are concerned, nor is it based mainly on general and abstract rules. Rather, it relies on administrative acts and different forms of administrative cooperation.