Coordination of cell proliferation, cell expansion and differentiation underpins plant growth.To maximise reproductive success, growth needs to be fine-tuned in response to endogenous and environmental cues. This developmental plasticity relies on a cellular machinery that integrates diverse signals and coordinates the downstream responses. In arabidopsis, the BAP regulatory module, which includes the BRASSINAZOLE RESISTANT 1, AUXIN RESPONSE FACTOR 6 and PHYTOCHROME INTERACTING FACTOR 4 transcription factors, has been shown to coordinate growth in response to multiple growth-regulating signals. In this review, we provide an integrative view on the BAP module control of cell expansion and discuss whether its function is conserved or diversified, thus providing new insights into the molecular control of growth. Coordination of growth: Enter the BAP moduleThe ability of plants to optimise their genetically-encoded growth by adjusting developmental programs to fluctuating environmental signals define plant phenology and adaptation. In order to grow appropriately, plants must respond accordingly with their developmental stage and their surrounding environment to adjust the growth of their cells. Therefore, the basal cellular processes governing plant growth -mainly cell proliferation and cell expansion (see