AML («Anti-Money Laundering») is a complex of procedures aimed at preventing illegal money laundering. Nowadays, more and more investors take an interest in the crypto industry because of its large capitalization. So, the governments use AML to the detriment of the user's anonymity, but in the interests of its security.
Companies and blockchain startups perform these procedures to regulate the financial market of the country at the legislative level. For companies, these procedures help to protect the market from intruders, in which case they require re-verification.