The real estate market, which deals in land and its developments, i.e. anything that is in the process of being built (whether completed or not), is defined as the real estate sector. In this universe, real estate agents emerge, who act as intermediaries for the sale or rental of properties, in the administration of rented properties, banks that grant mortgage loans, public bodies involved in registering properties and maintaining the registry, and notaries who legally formalize the will of the parties involved in a property purchase/sale. In this context, with a well-defined profile, there is the Real Estate Business Manager, who plans, organizes, coordinates and controls the actions directed at this field. The idea behind this book is nothing more than to record practical research experiences in this peculiar field of study - the real estate business. Looking at it from the most diverse perspectives, from the characterization of its business unit, to workforce management, process management, real estate brokerage management and sales force management, becomes imperative in order to understand the "Nodes" of NI - the name given to this collection, with its first volume.