What Is Cloud Computing?
The global market size of Cloud Computing will reach US$182,300 million by 2024, from US$36700 million in 2019. What is Cloud Computing? Simply put, Cloud Computing lets you store and access your applications or data over remote computers instead of your own computer.
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Nowadays, all of the legacy systems are being moved to the cloud platform, and the demand for Cloud Solution Architects are increasing day by day. In future, all web or mobile applications will be available on the cloud.
Before moving on, here are the topics you will learn in this blog:
So, why do businesses opt for Cloud Computing rather than building their own infrastructure? Have a look.
‘I don’t need a hard disk in my computer if I can get to the server faster … carrying around these non-connected computers is byzantine by comparison.’ – Steve Jobs, Former CEO of Apple
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Benefits of Cloud Computing
First of all, ‘cloud’ is just a metaphor to describe the technology. Basically, cloud is nothing but a data center filled with hundreds of components like servers, routers, and storage units. Cloud data centers could be anywhere in the world; also you can access it from anywhere with an Internet-connected device. Why do people use it? Because of the following benefits it has:
Each of these are discussed in detail below:
- Pay-per-use Model: You only have to pay for the services you use, and nothing more!
- 24/7 Availability: It is always online! There is no such time that you cannot use your cloud service; you can use it whenever you want.
- Easily Scalable: It is very easy to scale up and down or turn it off as per customers’ needs. For instance, if your website’s traffic increases only on Friday nights, you can opt for scaling up your servers that particular day of the week and then scaling down for the rest of the week.
- Security: Cloud Computing offers amazing data security. Especially if the data is mission-critical, then that data can be wiped off from local drives and kept on the cloud only for your access to stop it ending up in wrong hands.
- Easily Manageable: You only have to pay subscription fees; all maintenance, up-gradation and delivery of services are completely maintained by the Cloud Provider. This is backed by the Service-level Agreement (SLA).
These are the reasons why businesses are adopting Cloud Computing rather than trying to build their own on-site infrastructure. Next, in this blog, Cloud Computing Deployment Models are discussed.
‘Cloud Computing is often far more secure than traditional computing, because companies like Google and Amazon can attract and retain cyber-security personnel of a higher quality than many governmental agencies.’ – Vivek Kundra, Executive Vice President at Salesforce.com
Cloud Computing Deployment Models
There are three basic cloud deployment models:
- Public Cloud
- Private Cloud
- Hybrid Cloud
In a public cloud, your applications would reside on a shared infrastructure. Although Cloud Providers provide complete isolation from other users who co-exist on the same hardware, it is advisable not to store any sensitive documents or information on it when using a public cloud.
A private cloud is not very different from a public cloud, only that the security features vary. In a private cloud, your infrastructure or server will just have your applications. It will be completely isolated from public cloud servers. These servers are commonly used by companies which have sensitive information to store. A private cloud can either be provided to you by your Cloud Provider or you can create your own private cloud by buying your own stack.
A hybrid cloud is a combination of a public cloud and a private cloud. It provides functionalities of both public and private clouds.
So, if a company wants to keep its mission-critical data in a private cloud and run its services and applications on a public cloud, it can make a hybrid integration.
Cloud Computing Service Models
Basically, cloud services are divided into three categories:
Infrastructure-as-a-Service (IaaS): A Cloud Provider provides a user with a virtual machine or any other resources without letting the user worry about the physical aspects of the machine. More importantly, the user gets access to the operating system in IaaS. Therefore, you can install/uninstall any software on these servers.
Platform-as-a-Service (PaaS): In this service, one does not get access to the operating system. If you need a web server with PHP installed on it, they will give you this web server, without giving you access to the OS. What you get is a dashboard through which you can upload and deploy your files; the rest is managed by the Cloud Provider, i.e., software installation, security patch on OS, etc.
Software-as-a-Service (SaaS): In SaaS, one just gets the access to the software which is installed on the server. No dashboard is provided, and no access to the operating system is given, for example, Netflix. You can use Netflix, but you do not have any access to its server or dashboard. You can just use the software.
Cloud Computing Examples
Further, this blog lists down various places where Cloud Computing is applied.
- Big Data Analytics: Cloud Computing helps businesses store and analyze a large quantity of structured, semi-structured, and unstructured data to find underlying relationships. It is used in analyzing customer buying patterns and using them for marketing and advertising campaigns.
- File Storage: The biggest advantage of cloud storage is that it is virtually unlimited. Cloud Provides’ storage, available for almost the same or even lesser price, is 10 times more than your local storage.
- Backup: Backup generally requires a storage unit where the data is secure and, virtually, infinite storage is provided. Both can be achieved by using Cloud Computing.
AWS, Azure, and GCP are the major Cloud Providers world wide!
Amazon owns AWS, and Microsoft owns Azure, whereas, Google owns GCP.
- Amazon Web Services is the biggest Cloud Provider in the world. AWS provides an overwhelming amount of services, and also it owns the biggest market share in the IaaS industry.
Check out this insightful video on AWS Tutorial for Beginners
- Azure is only second to AWS, and it specializes in providing PaaS services. For example, Office 365 and Visual Studio are PaaS services which are provided by Microsoft that can be integrated with the Azure cloud.
- Google Cloud Platform is a growing cloud company, and it was mainly created for hosting Google’s own SaaS services like Google Drive and Gmail. But now, Google provides the cheapest instance compared to the other cloud giants.
They are the major Cloud Providers offering various cloud solutions. Now, have a look at the job trends.
Cloud Computing Jobs
Forbes mentioned that the median salary of a Cloud Computing Professional in 2018 was $146,350.
As per Indeed, the average salary of a Cloud Engineer is $129,000.
The global market size of Cloud Computing will reach US$182,300 million by 2024, from US$36,700 million in 2019.
This could give you an idea about the current and future values of a Cloud Computing Professional.
Forbes states that there are 101,913 job positions which are open right now, provided by 3,701 employers world wide.
The most in-demand Cloud Providers about whom a Cloud Engineer should be aware of are:
- Google Cloud Platform
- Amazon Web Services
- Microsoft Azure
‘Cloud Computing is a great euphemism for centralization of computer services under one server.’ – Evgeny Morozov, Author and Technology Skeptic
So, what are you waiting for? Get the desired skills and kick-start your career in Cloud Computing! If you want to learn more about what Cloud Computing is or any of the above-mentioned technologies, please refer to Intellipaat’s Amazon Web Services Training, Google Cloud Platform Training, and Microsoft Azure Training.