Scalability, Elasticity, And Efficiency In Cloud Computing

But how you implement them depends on whether your business traffic and workloads are random or predictable. Back then, if you wanted to scale your physical, on-site infrastructure, it could require weeks, sometimes months, also some aggravating expenses. But now, a third-party cloud computing service provider provides all the infrastructure already in place.

elasticity and scalability in cloud computing

Also, all cloud service providers have the necessary hardware and software to increase VMs instantly. Due to these reasons, the cloud is highly scalable, which results in many benefits for organizations. And why is the same not possible with an on-premises infrastructure?

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So that when the load increases you scale by adding more resources and when demand wanes you shrink back and remove unneeded resources. Elasticity is mostly important in Cloud environments where you pay-per-use and don’t want to pay for resources you do not currently need on the one hand, and want to meet rising demand when needed on the other hand. If your existing architecture can quickly and automatically provision new web servers to handle this load, your design is elastic. New employees need more resources to handle an increasing number of customer requests gradually, and new features are introduced to the system (like sentiment analysis, embedded analytics, etc.). In this case, cloud scalability is used to keep the system’s resources as consistent and efficient as possible over an extended time and growth.

Technically, scalability may not be dynamic and more frequently refers to increasing workload capacity without affecting performance or requiring more human operators. Instead, they can lease VMs to handle the traffic for that particular period. Customers wouldn’t notice any performance changes or have more customers in that specific year. Hence, it will only charge for the particular resource they have used. In auto insurance, customers renew their auto policies at the same time every year.

Horizontal scaling is especially important for businesses with high availability services requiring minimal downtime. Elastic computing is the ability to quickly expand or decrease computer processing, memory and storage resources to meet changing demands without worrying about capacity planning and engineering for peak usage. There are many advantages of scalability in cloud computing that will ensure that your businesses remain competitive and always meet sudden traffic or workload demands. Your business can easily and cost-effectively increase storage and computing capacity.

With computing, you can add or subtract resources, including memory or storage, within the server, as long as the resources do not exceed the capacity of the machine. Although it has its limitations, it is a way to improve your server and avoid latency and extra management. Like in the hotel example, resources can come and go easily and quickly, as long as there is room for them. Cloud computing solutions can do just that, which is why the market has grown so much. Using existing cloud infrastructure, third-party cloud vendors can scale with minimal disruption. This is one of the most popular and beneficial features of cloud computing, as businesses can grow up or down to meet the demands depending on the season, projects, development, etc.

Cloud Concepts

Semi-automated scalability takes advantage of the concept of virtual servers, which are provisioned using predefined images. Either a manual forecast or automated warning of system monitoring tooling will trigger operations to expand or reduce the cluster or farm of resources. Vertical scaling (or “scaling up”) refers to upgrading a single resource. For example, installing more memory or storage capacity to a server. In a physical, on-premises setup, you would need to shut down the server to install the updates. The supplementary infrastructure is only utilized initially in a pay-as-you-expand model and subsequently ‘shrinks’ back to a decreased volume for the rest of the year.

  • Cloud scalability refers to how well your system can react and adapt to changing demands.
  • Cloud elasticity is a cost-effective solution for organizations with dynamic and unpredictable resource demands.
  • In such a case, if they use only scalability, it will result in a server outage.
  • Cloud elasticity is the ability to gain or reduce computing resources such as CPU/processing, RAM, input/output bandwidth, and storage capacities on demand without causing system performance disruptions.
  • Achieving cloud elasticity means you don’t have to meticulously plan resource capacities or spend time engineering within the cloud environment to account for upscaling or downscaling.
  • Scalability handles the scaling of resources according to the system’s workload demands.

IT administrators and staff are able to add additional VMs on demand and customized to the exact needs of their organization. Saving time that would otherwise be spent setting up physical hardware, teams can respond to organizational needs with only a few clicks. Scalability and elasticity are the most misunderstood concepts in cloud computing. I hope the above helps to clarify what elasticity vs scalability is, but if you have any questions or comments please don’t hesitate to reach out or leave a comment below. Even that elasticity is not the cause of memory leaks or performance issues, dynamic provisioning may hide them at an operational expense. To scale horizontally (or scale out/in) means to add more nodes to a system, such as adding a new computer to a distributed software application.

Cloud Computing And Elasticity Vs Scalability

All these benefits are obviously useful for enterprises, but most of them can also be found in other technologies. One advantage exclusive to cloud computing, however, is cloud elasticity. An elastic cloud provider provides system monitoring tools that track resource utilization.

Scalability tackles the increasing demands for resources, within the predetermined confines of its allocated resources. It adds (but doesn’t subtract) its static amount of resources, based on however much is demanded of it. It’s the more cost-saving choice and it’s useful for tasks and environments where the workload is stable and has a predictable capacity and growth planning. Typically, scalability implies the use of one or many computer resources, but the number is fixed, instead of being dynamic. Cloud elasticity does its job by providing the necessary amount of resources as is required by the corresponding task at hand. This means that your resources will both shrink or increase depending on the traffic your website’s getting.

An elastic system automatically adapts to match resources with demand as closely as possible, in real time. Cloud environments (AWS, Azure, Google Cloud, etc.) offer elasticity and some of their core services are also scalable out of the box. It’s more flexible and cost-effective as it helps add or remove resources as per existing workload requirements. Adding and upgrading resources according to the varying system load and demand provides better throughput and optimizes resources for even better performance.

elasticity and scalability in cloud computing

Depending on which cloud solution you implement; public cloud, private cloud, or hybrid cloud solution. Cloud availability, cloud reliability, and cloud scalability all need to come together to achieve high availability. This refers to how well your cloud services are able to add and remove resources on demand. Elasticity is important because you want to ensure that your clients and employees have access to the right amount of resources as needed. Elasticity is usually enabled by closely integrated system monitoring tools that are able to interact with cloud APIs in real-time to both request new resources, as well as retire unused ones.

Elastic workloads are a major pattern which benefits from cloud computing. If our workload does benefit from seasonality and variable demand, then let’s build it out in a way that it can benefit from cloud computing. As the workload resource demands increase, we can go a step further and add rules that automatically add instances. As workload resource demands decrease; again, we could have rules that start to scale in those instances when it is safe to do so without giving the user a performance impact. Horizontal scaling involves scaling in or out and adding more servers to the original cloud infrastructure to work as a single system. Each server needs to be independent so that servers can be added or removed separately.

Cloud computing is so flexible that you can allocate varying compute resources with changes in demand. For example, you can buy extra online storage for your chatbot system as you receive increasing customer inquiries over time. Sridhar Panchapakesan is the Senior Director, Cloud Engagements at Synopsys, responsible for enabling customers to successfully adopt cloud solutions for their EDA workflows.

Either way, the benefit of doing this in Azure is that we don’t have to purchase the hardware up front, rack it, configure it etc. Rather via clicking in the Azure portal or using code, we can adjust for it. Microsoft already has pre-provisioned resources we can allocate; we begin paying for those resources as we use them. Cloud elasticity is sometimes confused with cloud scalability, often because they’re used interchangeably or talked about in the same sentence. Scalability refers to the growing or shrinking of workflows or architectures in pre-built infrastructures without impacting performance.

Why Call It Elasticity?

Executed properly, capitalizing on elasticity can result in savings in infrastructure costs overall. Environments that do not experience sudden or cyclical changes in demand may not benefit from the cost savings elastic services offer. 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. CIOs, cloud engineers, and IT managers should consider when deciding to add cloud services to their infrastructure.

Benefits And Limitations Of Cloud Elasticity

After that, you could return the extra capacity to your cloud provider and keep what’s workable in everyday operations. Three excellent examples of cloud elasticity at work include e-commerce, insurance, and streaming services. An elastic cloud service will let you take more of those resources when you need them and allow you elasticity and scalability in cloud computing to release them when you no longer need the extra capacity. This guide will explain what cloud elasticity is, why and how it differs from scalability, and how elasticity is used. We’ll also cover specific examples and use cases, the benefits and limitations of cloud elasticity, and how elasticity affects your cloud spend.

Cloud Scalability

The ability to increase or decrease IT resources as needed to meet changing demand, scalability enables organizations to increase workload size within an existing infrastructure without impacting performance. A capability unique to the cloud environment, scalability remains a driving force of its widespread adoption and the evolving dexterity of business infrastructure. Scalability includes the ability to increase workload size within existing infrastructure (hardware, software, etc.) without impacting performance. These resources required to support this are usually pre-planned capacity with a certain amount of headroom built in to handle peak demand.

Elasticity provides the functionality to automatically increase or decrease resources to adapt dynamically based on the workload’s demands. Even though it could save some on overall infrastructure costs, elasticity isn’t useful for everyone. Services that do not exhibit sudden changes in workload demand may not fully benefit from the full functionality that elasticity provides.

While you grow, and bring on more and more customers, it’s natural that your cloud spend will increase. What’s important to know is how your unit economics are affected by this growth so you can ensure profitability for your company. With an elastic platform, you could provision more resources to absorb the higher festive season demand.

For an eCommerce platform, shopping can increase during various seasons or festivals. Hence during such pick time, when transactions increase, there is a need to increase the resources. So, businesses can use cloud rapid elasticity services for such a specific period to handle the situation. Therefore, once the festival goes out, the resources can withdraw from the site. Data storage capacity, processing power, and networking can all be increased by using existing cloud computing infrastructure.

Though adjacent in scope and seemingly identical, cloud scalability and cloud elasticity are not the same. Elasticity is related to the dynamic use of current resources, whereas scalability is the accommodation of larger workloads without the transformation of complete existing infrastructure. Changing business requirements and known variability in demand make elasticity an appropriate cloud services adoption, and predetermined increase in business growth warrants an infrastructure that is scalable.

And by 2021, 94% of the internet workload will be processed in the cloud. Traditionally, when designing a system, engineers and architects would need to plan for and provision sufficient computing capacity in order to handle the maximum possible peaks in demand. For a retailer or bank, for example, this could be the annual Black Friday sales when the number of users visiting a website and making purchases is likely to be at their absolute peak. This is why companies prefer either vertical or horizontal scaling most times unless you have a compelling reason to go with diagonal scaling. Moving on, this idea of cloud scalability is often confused with elasticity, but in reality, they’re two completely different aspects.

Diagonal scale is a more flexible solution that combines adding and removing resources according to the current workload requirements. Scalability is a characteristic of cloud computing that is used to handle the increasing workload by increasing in proportion amount of resource capacity. Whereas, Elasticity is a characteristic that provides the concept of commissioning and decommissioning of a large amount of resource capacity dynamically.

So even though you can increase the compute capacity available to you on demand, the system cannot use this extra capacity in any shape or form. But a scalable system can use increased compute capacity and handle more load without impacting the overall performance of the system. Something can have limited scalability and be elastic but generally speaking elastic means taking advantage of scalability and dynamically adding removing resources. Scalability is the ability of the system to accommodate larger loads just by adding resources either making hardware stronger or adding additional nodes . Scaling your resources is the first big step toward improving your system’s or application’s performance, and it’s important to understand the difference between the two main scaling types.