Full context:   Collaboration in business can be found both within and across organizations, and examples range from formalised partnerships, use of coworking spaces where freelancers can work with others in a collaborative environment and crowd funding, to the complexity of a multinational corporation. Inter-organizational collaboration brings participating parties to invest resources, mutually achieve goals, share information, resources, rewards and responsibilities, as well as make joint decisions and solve problems. Collaboration between public, private and voluntary sectors can be effective in tackling complex policy problems, but may be handled more effectively by boundary-spanning teams and networks than by formal organizational structures. In turn, business and management scholars have paid much attention to the importance of both formal and informal mechanisms to support inter-organizational collaboration. They especially point to the role of contractual and relational mechanisms and the inherent tensions between the two. Global manufacturer Unilever offers to collaborate with innovating start-up businesses, and its "Unilever Foundry" refers to over 400 examples of "strategic collaboration" in this field. Collaborative procurement has been commended as a means of achieving financial savings and operational efficiency in the acquisition of common goods and services in the public sector, and producing mutually beneficial results in the private sector. Collaboration allows for better communication within organizations and along supply chains. It is a way of coordinating different ideas from numerous people to generate a wide variety of knowledge. Collaboration with a few selected firms has been shown to positively impact firm performance and innovation outcomes.