LPSN (List of Prokaryotic Names with Standing in Nomenclature) is a key resource in prokaryotic taxonomy because it provides the official and up-to-date record of validly published bacterial and archaeal names. It ensures consistency in naming, documents taxonomic hierarchies and type strains, tracks reclassifications and synonyms, and helps researchers follow the rules of the International Code of Nomenclature of Prokaryotes (ICNP). As a result, LPSN promotes stability, accuracy, and effective communication in microbiology.