A big advantage to this is for applications that require HIPAA compliance. One of the rules for HIPAA is to encrypt data at rest. There may be better ways to en

A big advantage to this is for applications that require HIPAA compliance. One of the rules for HIPAA is to encrypt data at rest. There may be better ways to encrypt your information, but this will tick a box for compliance purposes (the advantage of this shouldn't be underestimated). It basically allows HIPAA abiding applications to use S3 for data storage without the complexity of dealing with the encryption themselves, or using a 3rd party provider that offers this by proxy. The only remaining step is to trial and error your way through using it due to the "light" documentation.