Author - Daniels Kenneth In category - Software development Publish time - 25 October 2022

Scalability can either be vertical (scale-up with in a system) or horizontal (scale-out multiple systems in most cases but not always linearly). Therefore, applications have the room to scale up or scale out to prevent a lack of resources from hindering performance. There are cases where the IT manager knows he/she will no longer need resources and will scale down the infrastructure statically to support a new smaller environment. Either increasing or decreasing services and resources this is a planned event and static for the worse case workload scenario. Cloud Elasticity utilizes horizontal scaling allowing it to add or remove resources as necessary. This method is much more popular with public cloud services, through pay-per-use or pay-as-you-grow.

  • This means that the scaling has an upper limit based on the capacity of the server or machine being scaled; scaling beyond that often requires downtime.
  • Scalability enables stable growth of the system, while elasticity tackles immediate resource demands.
  • Another criterion that has been added to the list recently is cloud scalability and cloud elasticity.
  • For example, if one server can handle 50 users, 2 servers can handle 100 users and 10 servers can handle 500 users.
  • If your existing architecture can quickly and automatically provision new web servers to handle this load, your design is elastic.
  • This means that your resources will both shrink or increase depending on the traffic your website’s getting.

If you’re wondering what other factors and features you need to take into account when choosing a WordPress hosting provider, check out this article with 5 tips that are sure to be useful. Retail sites benefit greatly from Cloud Elasticity due to seasonal surges.

When is Cloud Elasticity Required?

It requires no application architecture changes as you are moving the same application, files and database to a larger machine. It enables companies to add new elements to their existing infrastructure to cope with ever-increasing workload demands. However, this horizontal scaling is designed for the long term and helps meet current and future resource needs, with plenty of room for expansion. This type of scalability is best-suited when you experience increased workloads and add resources to the existing infrastructure to improve server performance. If you’re looking for a short-term solution to your immediate needs, vertical scaling may be your calling.

The ability to scale up is not as efficient as reacting swiftly to a downtime or service shutdown. Businesses are investing heavily in cloud computing resources, and professionals with the right set of skills are much in demand.

What is Cloud Elasticity?

Similarly, you can configure your system to remove servers from the backend cluster if the load on the system decreases and the average per-minute CPU utilization goes below a threshold defined by you (e.g. 30%). Not all AWS services support elasticity, and even those that do often need to be configured in a certain way.

What kind of business are most likely to benefit from using cloud computing?

Industries such as financial and bankingindustry can benefit from cloud computing, as well as the hotels, real estate, onlineretailers, etc. (Hendricks, 2017). Cloud computing can offer these industries bettersecurity, survival in the market as more companies are going digital, flexibility andefficiency.

Elasticity and scalability may be offered together as a service by a cloud provider, but they provide different functionality from one another. Each company has its own unique set of requirements; therefore, no one size fits all when it comes to choosing between these two. This guide covers everything you need to know about the key differences between scalability and elasticity. Scalability is the ability of the system to accommodate larger loads just by adding resources either making hardware stronger or adding additional nodes .


People often mix elasticity and scalability with one another or consider them as one and the same. Because these two terms describe similar occurrences, they are often used interchangeably. But they aren’t interchangeable, and as such, shouldn’t be considered synonymous with each other. What they are is intertwined — because an elastic cloud must simultaneously be scalable up and out. The response system should be completely computerized to respond to changing demands. Certifications in cloud computing can help clearly define who is qualified to support an organization’s cloud requirements.

scalability vs elasticity

Event-driven architecture is better suited than monolithic architecture for scaling and elasticity. That could look like shopping on an ecommerce site during a busy period, ordering an item, but then receiving an email saying it is out of stock. Asynchronous messaging and queues provide back-pressure when the front end is scaled without scaling the back end by queuing requests.

Conclusion of Cloud Elasticity in Cloud Scalability

Use of “Elastic Services” generally implies all resources in the infrastructure be elastic. This includes but not limited to hardware, software, QoS and other policies, connectivity, and other resources that are used in elastic applications. This may become a negative trait where performance of certain applications must have guaranteed performance. Sometimes elasticity and scalability are presented as a single service, but each of these services provides very distinct functionalities. It’s up to each individual business or service to determine which serves their needs best.

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