how best can PaaS be explained to a beginner

Platform as a Service (PaaS) is a cloud service model that provides a complete environment for developing, running, and managing applications — without worrying about the underlying hardware, operating systems, or infrastructure.

Describe SES

Amazon SES (Simple Email Service) is a cloud-based email sending service provided by AWS.

It allows you to send and receive emails securely, reliably, and at scale — similar to how Gmail or Outlook send emails, but designed for applications and businesses.

Differences between Amazon EBS and S3

EBS → Think of it as a virtual hard drive attached to an EC2 instance.

S3 → Think of it as a cloud storage bucket for files, backups, and static content.

What is the difference between a multi-region and multi-availability zone architecture in AWS?

What is the role of AWS Elastic Load Balancer (ELB) and what are its types?