Marques dos Santos, Paula AlexandraGuedes, Anabela2025-10-162025-10-162025Santos, P. M., & Guedes, A. (2024). The Importance of Diagnosing Before Planning: Em J. Remondes, F. Remondes, & V. Serrano (Eds.), Advances in Logistics, Operations, and Management Science (pp. 87–110). IGI Global. https://doi.org/10.4018/979-8-3693-3723-3.ch002http://hdl.handle.net/10400.19/9489Any organisation wants to achieve success and, to do so, it needs to follow a set of steps to maximise that goal. Although non-profit organisations do not pursue profit as their central objective, they must be sustainable in the medium and long term and therefore need to apply all the tools available to guarantee this. The main aim of this chapter is to propose a diagnosis survey to help the gathering/systematisation of all the needed information regarding internal environment in non-profit organisations. After a brief theoretical conceptualisation, some tools to support the external environment analysis – general and task environment – will be presented and explained. As we also need a tool that helps internal organisation's analysis, it will be presented our innovative diagnosis survey proposal. Finally, we also aim to analyse and explain two different tools to summarize external and internal environment analyses - the SWOT analysis and the problem tree.engbook part2025-04-16cv-prod-424692510.4018/979-8-3693-3723-3.ch002