The SpatioTemporal Asset Catalog (STAC) (and Cloud Native Geospatial ecosystem) for/in JavaScript has evolved in the last year. This talk will update you on the current state of the ecosystem and gives an outlook on what is missing. For STAC talk will cover libraries such as stac-js, stac-layer, stac-browser, stac-node-validator, and more. We'll dive into what the libraries do, how they relate to each other and give you some hints how you get started. At the end, a short excursion into the cloud-native geospatial ecosystem in JavaScript for COG, geoparquet, geozarr and other file formats will be provided as well.