
Fine grained access control not jus tot a service but a particular action in a service. Also IAM roles help avoid sharing and storing secret keys in the system Ensure to establish a secure communication environment. AWS help notify the admin if a Key gets exposed to a public repository. Review collected by and hosted on G2.com.
Using across multi cloud, we still need secrest key based access. Also, security wise, using IAM roles in machines have more threat than using secret key loaded in memory in case of a compromise situation. Review collected by and hosted on G2.com.