Vertical scaling is the process of accommodating growing capacity demand by upgrading existing resources . Scalability vs elasticity in cloud computingToday, the term “scalability” is often used interchangeably with “elasticity.” As in the text below. This term “scalability” was coined to describe the ideal state of the architecture that is growth-friendly for successful startups. Initially, specifically in the pre-cloud, and pre-SaaS era, it was expensive to plan for scaling.

scalability and elasticity agility

Over time as the business grows so will the database and the resource demands of the database application. If the IT manager knows based on the growth rate of the business and/or the database he may purchase provisioned infrastructure so that the database application has the room to grow to its maximum performance and capacity expected. In other words, scale up performance without having to worry about not meeting SLAs in a steady pay-as-you-grow solution. Automatic scaling opened up numerous possibilities for implementing big data machine learning models and data analytics to the fold. Overall, Cloud Scalability covers expected and predictable workload demands and handles rapid and unpredictable changes in operation scale.

As discussed in my previous blog post, the notion of the OODA loop is foundational for many of today’s common agile, LEAN and DevOps methods. But given we typically talk about it in a systems context, it’s important to examine the core motivations for enterprises becoming more responsive to changes in their environment. This solution is best used at the initial, low-traffic stage of the project, difference between scalability and elasticity when fast setup is required. Your business has dips and spikes in demand that are rather chaotic, like FinTech trading, retail sales, and weather-dependent taxi service apps. Elasticity is the inherent capacity of a system to cater to a constantly changing demand level with significant unpredictable dips and peaks. Choose the right serverless computing technology for your business scenario.

Cloud Scalability

Cloud scalability is an effective solution for businesses whose needs and workload requirements are increasing slowly and predictably. Elasticity and scalability features operate resources in a way that keeps the system’s performance smooth, both for operators and customers. System scalability is the system’s infrastructure to scale for handling growing workload requirements while retaining a consistent performance adequately.

scalability and elasticity agility

Both of them are related to handling the system’s workload and resources. Diagonal scale is a more flexible solution that combines adding and removing resources according to the current workload requirements. The notification triggers many users to get on the service and watch or upload the episodes. Resource-wise, it is an activity spike that requires swift resource allocation. Thanks to elasticity, Netflix can spin up multiple clusters dynamically to address different kinds of workloads. To address these issues, businesses must progress along the cloud maturity curve, eventually moving to higher levels of automation and orchestration for self-service provisioning and real-time service level agreements .

Hybrid cloudThis computing environment combines a public cloud and a private cloud by allowing data and applications to be shared between them. 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. There are an expected number of desktops based on employee population. To ensure the ability to support the maximum number of users and meet SLAs, the amount of services purchased must be enough to handle all users logged in at once as a maximum use case. In short, the amount of resources allocated are there to handle the heaviest predicted load without a degradation in performance.


Choose the correct cloud monitoring service to address different kinds of business challenges. While both elasticity and agility refer to being able to allocate and deallocate resources as needed, there is a slight difference. It comes in handy when the system is expected to experience sudden spikes of user activity and, as a result, a drastic increase in workload demand. In this kind of scaling, the resources are added in a horizontal row.

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. A use case that could easily have the need for cloud elasticity would be in retail with increased seasonal activity. For example, during the holiday season for black Friday spikes and special sales during this season there can be a sudden increased demand on the system.

scalability and elasticity agility

Elasticity refers to the ability of a system to drastically change computing capacity to match an ever fluctuating workload. Systems are configured so that only clients are only charged for consumed instances, regardless of sudden bursts in demand. Cloud providers offer a broad set of policies, technologies, controls, and expert technology skills that can provide better security than most organizations can otherwise achieve. The result is strengthened security, which helps to protect data, apps, and infrastructure from potential threats.

Netflix – Practically owns their category as they have one of the most prolific infrastructure capabilities to scale product features/offerings to a very personalized set of capabilities to their customers. Public clouds are environments hosted by a cloud service provider that rents space to multiple shared users. The security features are not as strong as the private ones, but they are cheaper due to shared cost. When one business experiences peaks, another one is consuming a lower amount of bandwidth, so the same servers can cater for multiple businesses, making them more affordable.

Cloud Elasticity Vs Scalability: Main Differences To Know About

In the post corona economy, companies have realized cloud as the modern facilitator of best services in terms of cost, security, agility and scalability for their digital transformation. This environment is used for mission-critical applications that carry sensitive data, like business analytics, research and development, and supply chain management. On-site datacenters typically require a lot of hardware setup , software patching, and other time-consuming IT management chores. This allows IT teams to spend time focusing on achieving more important business goals. The ability to automatically or dynamically increase or decrease resources as needed.

Since SDI enhances agility and flexibility, digital-transformation-focused organizations are introducing SDI automation to handle dynamic workloads and fluctuating business demands. Additionally, adopting SDI can cut down on irrational spending and ensure satisfactory Return on Investment . Fig no.1- Abstract view of Service orchestration demonstrating how service portal is interacting with the cloud services. Orchestration software integrates the resource pools into programmable management environments and this entire process is called Service Orchestration. The foundational layer “systems and infrastructure” is where teams typically apply Agile and DevOps methodologies.

The ability to keep services up and running for long periods of time, with very little downtime, depending on the service in question. Choose the correct Azure management tool to address different kinds of technical needs and challenges. Choose the correct Azure Artificial Intelligence service to address different kinds of business challenges. Modern business operations live on consistent performance and instant service availability. Scalability enables stable growth of the system, while elasticity tackles immediate resource demands. Scalability is an essential factor for a business whose demand for more resources is increasing slowly and predictably.

In most cases, this is handled by adding resources to existing instances—called scaling up or vertical scaling—and/or adding more copies of existing instances—called scaling out or horizontal scaling. In addition, scalability can be more granular and targeted in nature than elasticity when it comes to sizing. According to a poll performed by 451 Research, more than 60% of businesses regard cloud computing to be a major infrastructure need, with data security, service agility, and lower operational costs being key benefits. Many businesses prefer to keep their CapEx low and use OpEx cost centers more readily. This is a natural part of transitioning from bare metal to cloud computing, and leads to lower costs overall. Public cloud environments are pay-as-you-go services, so you don’t pay for idle machines.

If customers are experiencing slowness with a particular cloud service, they are said to be experiencing some latency. Even though modern fiber optics are fast, it can still take time for services to react to customer actions if the service is not local to the customer. Cloud services have the ability to deploy resources in datacenters around the globe, which addresses any customer latency issues.

Best Practice #2: Cloud Computing Scalability For Background Tasks

A cloud provider keeps the hardware up to date, but operating system maintenance and network configuration is left to the cloud tenant. For example, Azure virtual machines are fully operational virtual compute devices running in Microsoft’s datacenters. An advantage of this cloud service model is rapid deployment of new compute devices. Setting up a new virtual machine is considerably faster than procuring, installing, and configuring a physical server. For example, there is a small database application supported on a server for a small business.

MongoDB sharding provides additional options for load balancing across multiple servers called shards. In this way, each shard becomes an independent database, while the whole collection transforms into one logical database. Horizontal scale in MongoDB splits your database into separate pieces and stores them on multiple servers. SQS and Lambda are commonly used together because it improves Lambda’s call and error functions.

The cloud tenant only needs to provide their data to the application managed by the cloud provider. For example, Office 365 provides a fully working version of Office that runs in the cloud. All that you need to do is create your content, and Office 365 takes care of everything else. Cloud services can provide and manage hardware and software for workloads. Getting a workload up and running with cloud services demands less technical resources than having IT teams build and maintain a physical infrastructure for handling the same workload.

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Another option to guarantee scalability is to balance database load by distributing simultaneous client requests to various database servers. By default, MongoDB can accommodate several client requests at the same time. In addition, MongoDB employs specific parallel management mechanisms and locking protocols to maintain data integrity at all times. A scalable cloud computing infrastructure allows companies to quickly adjust their use of on-demand servers, depending on the number of users and transactions they need to accommodate. Legacy systems and platforms that are in the process of migrating to hybrid or fully cloud environments require thorough planning to minimize downtime and ensure seamless transition.

This is a solution that falls somewhere in between a public and private cloud. Community clouds are not fully public, but are only accessible to representatives of certain industries or segments, for example healthcare or public services. Now that we’ve covered the meaning of scalability in cloud computing, let’s find out why it’s different from elasticity.

Horizontal Scaling

Overlapping with PaaS, serverless computing enables developers to build applications faster by eliminating the need for them to manage infrastructure. With serverless applications, the cloud service provider automatically provisions, scales, and manages the infrastructure required to run the code. They use resources only when a specific function or trigger occurs.

Instead of spending budget on additional permanent infrastructure capacity to handle a couple months of high load out of the year, this is a good opportunity to use an elastic solution. The additional infrastructure to handle the increased volume is only used in a pay-as-you-grow model and then “shrinks” back to a lower capacity for the rest of the year. This also allows for additional sudden and unanticipated sales activities throughout the year if needed without impacting performance or availability. This can give IT managers the security of unlimited headroom when needed. This can also be a big cost savings to retail companies looking to optimize their IT spend if packaged well by the service provider.

With AWS auto-scaling, you can automatically increase or reduce the task capacity of your ECS container. Scalability computing has multiple advantages for companies of all sizes and stages of development, but is particularly useful for scaleups and enterprises. Diagonal type is a hybrid approach where you increase the compute capacity of every single machine to its maximum, but then buy more of them too. This offers the benefits of both approaches while minimizing the risks. Horizontal scaling is used by enterprise level companies and complex applications.

Common use cases where cloud elasticity works well include e-commerce and retail, SaaS, mobile, DevOps, and other environments that have ever changing demands on infrastructure services. Businesses that have a predictable workload where capacity planning and performance are stable and have the ability to predict the constant workload or a growth cloud scalability may be the better cost saving choice. The purpose of Elasticity is to match the resources allocated with actual amount of resources needed at any given point in time. Scalability handles the changing needs of an application within the confines of the infrastructure via statically adding or removing resources to meet applications demands if needed.

Scalability is the inherent capacity of a system to cater to growing demand by adding more or bigger computing resources. Scalable data infrastructure is particularly beneficial for businesses dealing with seasonal or cyclical demand. Retail companies, for example, can easily manage server demand during the holidays. They are provided on-demand via self-service, so vast amounts of computing resources can be provisioned in minutes. There is no manual intervention in provisioning or deprovisioning services. Scalability handles the scaling of resources according to the system’s workload demands.

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