Guide: AWS Elastic Beanstalk - Custom Domains and SSL

Introduction:
Custom Domains and SSL are important facets of AWS Solution Architect exam, as they enhance application security and user accessibility in AWS Elastic Beanstalk.

What is it?
Custom Domains provides custom URL for your application instead of the default URL given by AWS Elastic Beanstalk. SSL (Secure Sockets Layer) are cryptographic protocols that provide communications security over a computer network.

Why is it important?
Custom domains give your application a professional and accessible URL, while SSL encrypts data transmitted between the user and your application, making your application secure and trustworthy.

How it works?
Custom domain names can be configured with Route 53, AWS’s DNS service, to point to the AWS Elastic Beanstalk environment. SSL can be configured in AWS Elastic Beanstalk environment to secure the information that's being transmitted between your users and your application.

Exam Tips: Answering Questions on Custom Domains and SSL
1. Understanding the basics of how custom domains and SSL are configured is vital.
2. Be familiar with AWS Route 53 as it is essential for configuring custom domains.
3. Know how SSL enhances security by facilitating encrypted communication.
4. Understanding the relationship between SSL, AWS Certificate Manager(ACM), and AWS Elastic Load Balancer(ELB) is crucial.
5. Recognize the importance of maintaining consistency between the names in the SSL and the custom domains.

In conclusion, mastering Custom Domains and SSL in AWS Elastic Beanstalk is crucial for the AWS Solution Architect exam. Both components play key roles in enhancing the application's security, accessibility, and professionalism.