As a Cloud Engineer, I frequently utilize Amazon Web Services (AWS) and have an in-depth understanding of the Shared Responsibility Model it operates. To put it simply, AWS is responsible for protecting the underlying infrastructure that runs its services, and the user or client is responsible for other factors, like configurations, applications, and data security.
An instance where this came into play was when my team was tasked with setting up a secure web application on AWS for a client in the financial sector. We leveraged AWS's responsibility for core cloud infrastructure security, such as physical security, hardware, server, and database licensing.
Then, as per the model, our team took over the responsibility of setting up secure Amazon S3 buckets, implementing IAM policies, and generating secure EC2 and RDS instances. Additionally, we applied security patches, managed the encryption of data, and ensured secure authentication procedures. As a result, we achieved ISO 27001 compliance for our client's web application, hallmarking our adherence to the shared responsibility model.