The James Webb Space Telescope (JWST, Gardner et al. 2006) is a 6.5 m space telescope launched in 2021 December and is developed by the National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), and the Canadian Space Agency (CSA). Following recommendations of the science advisory board of the JWST, the Space Telescope Science Institute (STScI), in charge of the scientific operations of the JWST, issued a call for “Early Release Science 105”(ERS) programs. The goals of these programs are (1) to provide firstlook public data to the astronomical community as soon as possible after launch,(2) to further test the instruments and observing modes in addition to tests performed during commissioning and showcase the technical capabilities of JWST, and (3) to help prepare the community for General Observers (GO) proposals. An important aspect of ERS programs is that they must deliver highly processed data quickly (within 3–5 months of observations) and provide Science-Enabling Products (SEPs) to the community.

In this paper, we present one of the 13 accepted ERS programs called “PDRs4All: Radiative feedback from massive stars”(ID1288) 106 which is dedicated to studying the interactions of massive stars with their surroundings. We first describe the general scientific context in Section 2. We then describe the immediate objectives of this program in Section 3 and its science objectives in Section 5. We discuss the target, the Orion Bar, in Section 4 and describe simulated infrared (IR)