Prokaryotes lack a conventional cytoplasm. However, the outer membrane-bounded periplasm of gram negative microbes allows them to execute eukaryote-like vesicular exocytosis e. g.
https://www.researchgate.net/publication/230793568_Discovery_of_vesicular_exocytosis_in_prokaryotes_and_its_role_in_Salmonella_invasion?ev=prf_pub
Article Discovery of vesicular exocytosis in prokaryotes and its rol...