The United Nations Office for Project Services (UNOPS) is a self-financing organization that provides project management, procurement, and infrastructure services to partners worldwide. Here is a brief overview of how UNOPS works:

1. Project Management: UNOPS manages projects on behalf of its partners, which can include UN agencies, governments, and other organizations. UNOPS provides end-to-end project management services, including planning, implementation, monitoring, and evaluation.
2. Procurement: UNOPS offers procurement services to its partners, which can include sourcing, purchasing, and delivering goods and services. UNOPS also provides procurement support, including contract management, supplier performance evaluation, and quality control.
3. Infrastructure: UNOPS provides infrastructure services, including design, construction, and maintenance of buildings, roads, and other infrastructure. UNOPS also offers technical advisory services to help partners identify and implement sustainable infrastructure solutions.
4. Partnerships: UNOPS works closely with its partners to identify their needs and develop customized solutions to address them. UNOPS also fosters partnerships with private sector companies and other organizations to leverage their expertise and resources.
5. Sustainability: UNOPS is committed to promoting sustainable development and environmentally-friendly practices in all its projects. UNOPS works to ensure that its projects are socially, economically, and environmentally sustainable, and that they contribute to the achievement of the United Nations Sustainable Development Goals.

UNOPS works to support its partners in delivering effective and sustainable projects that improve the lives of people around the world.