This webinar is based on guidance published by SANBI and UNEP-WCMC. The session explores practical, science-based approaches to spatial biodiversity assessment and prioritization. It discusses the guiding principles, datasets, methods and products included in the guidance document. This approach can be applied in terrestrial, inland water, and coastal and marine environments. This webinar is especially useful for countries that are biodiversity rich yet resource constrained, and where difficult choices have to be made about how and where to focus conservation action.