The goal of this Product Access Guide (PAG) maintained by WMO is to facilitate access to satellite-based geophysical datasets (mostly "level 2" products or higher) for users, and to provide guidance on these products where possible. This is achieved by linking to quality-controlled product collections made available online by data providers. Information on theme-specific international expert groups and training material is also provided. The PAG is simple and distinct from comprehensive data portals such as the GEO portal, the INSPIRE-GEO portal, or the WIS portals. One key target audience are less-experienced satellite data users, in particular from developing countries.