 Collection 2 of Copernicus Global Land Cover Layers was released in May 2019, providing a global discrete land cover map at 100M resolution and additional continuous classification scheme for heterogeneous land cover areas. The collection includes 20 layers for customization and has major improvements in map quality with overall accuracy reaching around 80%. The processing system went into operational status allowing annual updates on a global scale with an implemented training and validation data collection system. Methodological improvements include aligning with the Sentinel-2 satellite system, improving metric extraction, adding better auxiliary data, enhancing biome delineations, and expert rules. An independent validation exercise confirmed improved classification results. Resources for accessing the product layer and detailed peer review documentation are also provided in this paper. This article was authored by Marcel Buchhorn, Myroslav Elisiv, Nandan Erdentzenbezer, and others. We are article.tv, links in the description below.