Homeostasis across diverse ecosystems, ranging from human hosts to environmental matrices, is profoundly governed by microbial communities. Dysbiosis, the disruption of this microbial equilibrium, leads to significant adverse outcomes in medicine, agriculture, aquaculture, and environmental health. This review synthesizes current knowledge on microbial transfusions, defined as the deliberate transfer of microbial communities or their components to restore, reconstitute, or enhance functional cap