What is the difference between vertical scaling (scaling up) and horizontal scaling (scaling out) in AWS?

Question

AWS Cloud Practitioner — Medium

What is the difference between vertical scaling (scaling up) and horizontal scaling (scaling out) in AWS?

Accepted Answer

Vertical scaling increases the capacity of an existing instance, while horizontal scaling adds more instances of the same size. This is why AWS services like Auto Scaling support horizontal scaling for elasticity, as it allows for dynamic resource allocation.