Amazon Lex achieves ISO Compliance
Amazon Lex is now one of the AWS services under ISO Compliance for the ISO 9001, ISO 27001, ISO 27017, and ISO 27018 standards. AWS maintains certifications through extensive audits of its controls to ensure that information security risks that affect the confidentiality, integrity, and availability of company and customer information are appropriately managed. You can download copies of the AWS ISO certificates and use them to jump-start your own certification efforts: AWS ISO 9001 certificate, AWS ISO 27001 certificate, AWS ISO 27017 certificate, and AWS ISO 27018 certificate.
Source:: Amazon AWS