Although software outsourcing and outstaffing have similar goals - cost optimization and efficiency improvement - their approaches differ. In outsourcing, companies transfer full responsibility for project fulfillment to third-party performers. In the case of outstaffing, control remains with the client, and the external specialist only expands the internal team. The choice between these models depends on the specifics of the business, needs and goals. The right choice will help improve the quality of development and reduce the risks associated with project management.