September 2025. Our team members travel to Ensenada (Mexico) to attend the IAU symposium “Massive Stars Across Redshifts in the Era of JWST and Large-Scale Surveys“, for which Miriam Garcia has served as SOC co-chair. During one week, IAUS402 will bring together experts on different aspects of massive stars, and on high redshift star-forming galaxies and re-ionization. There will be discussion on the advances enabled by JWST and by large spectroscopic surveys, with an outlook of future advances to be powered by present and future observing facilities. Our team contributions to the field will be presented in one invited talk by Frank Tramper, contributed talks by Alex Legault and Miriam Garcia, and one poster.