Fuzzy entity resolution: resolve a messy, free-text company name to its canonical GLEIF Legal Entity Identifier (LEI) with a 0-1 similarity score and a high/medium/low confidence label. Tolerant of legal-suffix noise (Inc/Ltd/GmbH/S.A.), word order, ampersands, punctuation, and former/alternate names (e.g. 'Apple Computer Inc' resolves to Apple Inc. via GLEIF's recorded other-names). Returns the top candidates ranked by score plus a single bestMatch (null when nothing clears medium confidence — so a low-confidence top hit is never silently treated as a match, which is the safe default for KYB). The record-linkage complement to business.lei (name search). Optional country (ISO-2) narrows to a jurisdiction. Backed by GLEIF Golden Copy (~2.6M entities, CC0).