The success of the PPI process hinges on a comprehensive grasp of the roadmap, encompassing the following key aspects: Preparatory tasks, including needs identification and funding opportunities, 

• The design and selection of the procedure, 
• The execution of the PPI project itself, 
• The deployment of results and their publication by the public buyers to the citizens. 

Furthermore, it is essential to consider multiple interwoven factors, including legal, political, social, financial, and technical considerations.