Earlier, if you want to deploy an application you have to buy a server, and that is not at all cheap. You need to invest a lot of money in it and a lot of time to set up it. You also need to put up an infrastructure to maintain your server. In downtime or server failure, you need a replacement as well as a good active team to handle the situation.
If your application goes viral then you need to scale up your infrastructure. But what if after a few months it again loses its popularity? you can’t just go back to shop again and return everything. There were a lot of problems similar to this but then the revolution happened. #cloudcomputing
What is Cloud Computing?
Cloud computing is on-demand access, via the internet, to computing resources, applications, data storage, development tools, servers (physical servers and virtual servers), networking capabilities, and more hosted at a remote data centre managed by a cloud services provider like Amazon Web Services, Microsoft Azure, Google Cloud Platform, etc. They make these resources available for a monthly subscription fee or bills them according to usage that is also known as the pay-as-you-go model.
Cloud One-liner
Cloud lets you plug into infrastructure via the internet, and use computing resources without installing and maintaining them on-premises.
What is the pay-as-you-go model?
pay-as-you-go(PAYG) also referred to as Pay-as-you-use is the most frequently used payment model at the moment. The concept behind this model is that the user does not need to pay before and allocate resources instead they need to pay for what they use. This also reduces the wastage of resources. It is a much convenient, cost-saving, and in-demand form of payment model.
Types of Cloud
- Public Cloud: The public cloud is a hub of readily available compute resources such as networking, memory, storage, and many other services. These resources are hosted onto data centres and are globally accessible. For eg: Amazon Web Services (AWS)
- Private Cloud: Private clouds are loosely defined as cloud environments solely dedicated to a single end-user or group. You can call a public cloud a private cloud when all its resources are for a single organisation. For eg: OpenStack.
- Hybrid Cloud: As the name implies, a hybrid cloud is a mixture of both public and private clouds working together to better solve the use case of an organisation. It is a computing environment that combines an on-premises data centre (private cloud) with a public cloud, allowing data and applications to be shared between them.
Types of Cloud Services
- Infrastructure as a service (IaaS)
- Platform as a service (PaaS)
- Software as a service (SaaS)
Top Cloud Providers
In the current scenario, there are plenty of public clouds available to serve their resources to users and organisations but the leading ones are Amazon, Microsoft, Google, Oracle, Alibaba, and IBM.
Main benefits of Cloud Computing
- Cost-saving: Cloud requires no upfront cost. Organisations using cloud computing only have to pay for the resources that they use. No maintenance or upkeep charges are included or associated with the cloud.
- Flexibility: A Server faces many issues like service deprecation, crucial updates which are very tough to handle in an On-premises system whereas the cloud makes all this very easy to handle and saves downtime.
- Accessibility: With cloud software, applications can be accessed from anywhere at any time via any device or a web browser.
- Competitive edge: Still many organisations prefer to go with the traditional way of data storage and management, here they miss out on very important advantages provided by cloud providers.
- Availability: High availability is the ultimate goal of moving to the cloud. The cloud service providers are quite reliable in offering the services. They maintain an uptime of 99.9%.
- Business continuity: The data is stored in a safe location and the quick access to the data again after a crisis allows the business to go on smoothly without the loss of productivity.
Conclusion
It is clear as glass that Cloud computing is a new revolution in the IT industry and has changed the whole scenario. With cloud computing, teams become more efficient and reduce time to market as they can rapidly acquire, scale services, without the considerable effort that requires managing a traditional on-premise infrastructure.
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