Companies who use Amazon Web Services (AWS) often choose to do so because of its scalability, ease of use and lower costs than other services or hosting their own data centers. However, it could bring a challenge for those in the EU who need to remain compliant with Schrems II to protect their data. Here we discuss the compliance challenges facing EU companies using AWS to host data and how Cryptomathic’s Bring Your Own Key (BYOK) Service can provide Schrems II compliance for AWS-hosted data.