Soft substrates (SS) can be the elastic cell walls, tissues, vesicles, or majorly fluid substrate (like mucus) have elasticity ranging from 0-10 3 Pa ; at lengths scales associated with AM (1-100 𝜇𝑚), surface tension (ST) becomes a dominating force in such systems. Therefore, the hydrodynamics of AM is invariably coupled to the substrate shape, which is in-turn coupled to the active ordering due to the active stresses (AS). For example, Guruciaga et al. used Landau's theory to describe the geometry of the first cells of fertilized mouse embryo on soft background (e.g., Matrigel and uterine wall ) [see Figs. )], that were simplistically modeled as a spherical cap of fixed radius. Typically, the AS produced from directional cellular activity consistently range from 0.1-1 kPa ; such stresses, coupled with the elasticity of the biological tissues that surround these cellular systems, will ensure that elasto-capillarity will determine the geometry and influence of these surrounding background. Furthermore, Latorre et al . demonstrated how AS imparted by the epithelial cells (which follow nematic ordering) decide the overall shape of fluid filled bumps [see Figs. )], however, in their theoretical description, the directionality of the AS was disregarded . While an apriori assumption on the deformed state of the substrate can give us some insights into the developmental topology of that particular system, or an isotropic-state assumption can provide a solution for a simplified shape , the question of what topological deviations result from conditions of greater (or lesser) stiffness for varying active arrangements remains unaccounted; i.e, a rigorous theory of AM on SS remains missing in the existing literature.