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From a design perspective, this paper offers a response to the impact, value, and application of a manuscript published by Philipsen et al. (Improving teacher professional development for online and blended learning A systematic meta-aggregative review. Educational Technology and Research Development, 67, 1145-1174. 10.1007/s11423-019-09645-8, 2019). Philipsen et al. (2019) reviewed what constitutes an effective teacher professional development program (TPD) for online and blended learning (OBL), with our response focusing on its v