This chapter reviews Switzerland’s approach to delivering in partner countries and through partnerships to determine whether this is in line with the principles of effective development co-operation.Switzerland’s partners value its expertise, reliability, predictability and flexibility, including in fragile contexts. Switzerland’s assets are thorough context analyses, conflict sensitive programme management and flexibility. The upcoming strategies on partnering with the private sector and civil society organisations are an opportunity to better take advantage of the specificity of each partner and design complementary interventions. Despite advocating for development co-operation effectiveness, Switzerland has room to strengthen mutual accountability and use country systems more. Switzerland maintains a close dialogue with partner countries, but more can be done to increase mutual accountability, and ease access to project and budget documentation.