EbA uses biodiversity and ecosystem services as part of a larger adaptation strategy – an excellent example of a viable nature-based solution. As well as providing climate change adaptation benefits, this approach also contributes to biodiversity conservation and enhances local economies. IUCN has been extensively involved in EbA work, strengthening community resilience and livelihoods in almost 60 countries. This work demonstrates our ongoing commitment to the implementation of naturebased solutions. The conservation and sustainable development community considers EbA to be a strong method of addressing climate change and its associated challenges. However, there is still a tendency for policy makers to implement traditional engineering solutions for adaptation, rather than investing in EbA. The need for solid data on the cost-effectiveness of this nature-based approach was the driver behind an IUCN study identifying the economic costs and benefits associated with EbA. The lessons learned from this appraisal process will make it easier for policy makers to compare EbA options with engineered solutions.