From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 1 Cloud Concepts

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Understand scalability

Understand scalability - Azure Tutorial

From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 1 Cloud Concepts

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Understand scalability

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- [Instructor] To understand scalability, let's assume we have an application running on an elastic infrastructure. You already know how an elastic infrastructure responds to an increase in load. Now, let's shift our focus to see how an application behaves during the same circumstances. When a user provisions an application, the elastic infrastructure assigns sufficient resources for it to run. If the load on the application increases, it can react in one of two ways. Let's see what happens in the first case. To keep up with the increase in load, the application can increase the size of its instance and demand a bigger set of resources from the elastic infrastructure, kind of like making itself more powerful to sustain the excess demand. This allows users to continue using the application without disruption despite the excess load. When an application does this, that is, increase the instance size with the help of bigger resources, it is said to scale up. Once the load on the…

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