Service composition and integration are well investigated problems in SOA. However, they still remain among the hard SOA challenges for which automated approaches have yet to be developed. These issues are hindering the agile and cost-effective development of service-based business solutions, and the need for addressing them becomes more pressing with the increase in the number of online (cloud) services. We refer to a composition of services that solves a business problem as a (composition) solution. In this position paper, we argue that solution reuse at a large scale can be exploited to address challenges of service composition and integration by harnessing the collective intelligence and labor of various businesses and people present on the Internet. We propose a reference architecture and technical design of a platform for representation, sharing, and search of solutions and also a marketplace which fosters the reuse of service composition and integration solutions.