What is the primary component to which you would subscribe email addresses for periodic email notifications?

The primary component for subscribing email addresses to receive periodic email notifications in AWS is a topic, specifically an Amazon Simple Notification Service (SNS) topic. SNS is a fully managed messaging service that enables you to decouple microservices, distributed systems, and serverless applications.

When you create an SNS topic, you can subscribe various endpoints to it, including email addresses, so that when a message is published to the topic, the subscribers receive notifications in real-time. This is particularly useful for alerting users, sending updates, and communicating important information or events effectively.

In summary, the topic serves as a central point where messages are disseminated to all subscribed endpoints, making it the right choice for managing email notifications.