The document summarizes the establishment and development of the Croatian Central Procurement Office (CPO) and lessons learned. It discusses that the CPO was established in 2010 to set up an effective central public procurement system. It started with up to 15 civil servants and now has 25 covering 20 procurement categories and serving over 550 clients. Key stakeholders impact the success of framework agreements and the CPO's internal organization has changed over time, engaging additional experts. Managing the procurement process requires cross-functional expert teams for each category. The CPO provides added value through template tender documents, technical consultations, and support for new clients. A SWOT analysis identifies strengths like resources and knowledge, but also weaknesses like lack of standards and IT,