Summary
Over the course of this chapter, you got an overview of the basics of security, which included creating a security configuration and assigning it to multiple EMR clusters. Then you learned how you can enable authentication and authorization for EMR APIs using AWS IAM users, groups, policies, and roles.
Then we dived deep into data protection, which included encrypting your data at rest in a cluster's local disk, Amazon S3, and also securing your data while in transit during distributed processing.
Finally, we covered how you can configure managed and custom security groups for your cluster nodes and how configuring interface VPC endpoints can provide better security and performance.
That concludes this chapter! In the next chapter, we will dive deep into data-level security where you will learn how you can enable granular permission management on your cluster data using AWS Lake Formation and Apache Ranger.
