This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- Elasticity is about automatically adapting to variable demand, while scalability is about handling overall growth.

- Horizontal scaling (adding more instances) is the preferred AWS method for achieving high availability and fault tolerance.

- Vertical scaling (increasing instance size) is simpler but creates a single point of failure, making it a common exam distractor.

- Elastic Load Balancing (ELB) distributes traffic, while Auto Scaling Groups (ASG) automatically add or remove instances.

- Exam scenarios involving unpredictable traffic spikes are best solved with the combination of ELB and ASG for horizontal scaling.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep