It is an LCA restricted to climate change: a product's carbon footprint, governed by ISO 14067. It follows the LCA approach for this single indicator, whereas a PEF-method LCA covers 16 impact categories. Useful for quickly comparing 2 products on climate, it misses impact shifting between criteria, common in eco-design.
Read the source article: LCA or Bilan Carbone®: how do they differ, which to choose?