The assembly and secretion a set of components to form an extracellular vesicule, a membrane-bounded vesicle that is released into the extracellular region. Extracellular vesicles include exosomes, microvesicles and apoptotic bodies, based on the mechanism by which they are released from cells and differentiated based on their size and content. [ http://www.ncbi.nlm.nih.gov/pubmed/28736435 ]