Amazon Web Services – Overview of AWS

Introduction about AWS

Amazon Web Services (AWS) began in 2006 offering IT infrastructure services to businesses in the form of web services. Currently it is commonly known as cloud computing. With the cloud services, Business Entities no longer need to plan for and procure servers and other IT infrastructure in advance, whereas they can instantly spin up as many servers in minutes and deliver results faster. AWS provides a highly reliable, scalable, low-cost infrastructure platform in the cloud the across world. One of the key benefits of cloud computing is the opportunity to replace up-front capital infrastructure expenses with low variable costs.

What Is Cloud Computing

Cloud computing is the on-demand delivery of compute power, database storage, applications, and other IT resources through a cloud services platform connected via the Internet with pay-as-you-go pricing model. With cloud computing, you don’t need to make large upfront investments in hardware and spend a lot of time on the heavy lifting of managing that hardware. Instead, you can provision accoridng to your requirement and start operating your IT
department. You can access as many resources as you need, almost instantly, and only pay for what you use.Cloud computing provides a simple way to access Services like (Servers, Storage, Databases and other application services) over the Internet. A cloud services platform such as (Azure, Google Cloud, Amazon Web Services many more) owns and maintains the network-connected hardware required for the application services, while you provision and use what you need via a web application.

Few of the Advantages of Cloud Computing

1. Easily deploy your application in multiple regions around the world with just a few clicks. This means you can        provide lower latency and a better experience for your customers at minimal cost.
2. Focus on projects that differentiate your business, not the infrastructure. Cloud computing lets you focus on your own customers, rather than on the heavy lifting of racking, stacking, and powering servers.
3. Eliminate guessing on your infrastructure capacity needs. When you make a capacity decision prior to deploying an application, you often end up either sitting on expensive idle resources or dealing with limited capacity. With cloud computing, these problems go away. You can access as much or as little capacity as you need, and scale up and down as required with only a few minutes’ notice.
4. In cloud computing, new IT resources are only a click away, which means that you reduce the time to make those resources available to your developers from weeks to just minutes. This results in a dramatic increase in agility for the organization, since the cost and time it takes to experiment and develop is significantly lower.

Types of Cloud Computing

Cloud computing provides developers and IT departments with the ability to focus on their job. Businees has to spend less time as compare to on-primises task like procurement, maintenance, and
capacity planning. As cloud computing has grown, there are several different models and deployment strategies have introduced to meet specific needs of different users. Lets understand the differences between (Infrastructure as a Service, Platform as a Service, and Software as a Service). This will help you to decide what set of services is right for your needs.

Cloud Computing Models

1. Infrastructure as a Service (Iaas)
2. Platform as a Service (PaaS)
3. Software as a Service (SaaS)

Infrastructure as a Service (IaaS)

Infrastructure as a Service (IaaS) contains the basic building blocks for cloud IT and typically
provide access to networking features, computers (virtual or on dedicated hardware), and data
storage space. IaaS provides you with the highest level of flexibility and management control
over your IT resources and is most similar to existing IT resources that many IT departments
and developers are familiar with today.

Platform as a Service (PaaS)

Platform as a Service (PaaS) removes the need for your organization to manage the underlying
infrastructure (usually hardware and operating systems) and allows you to focus on the
deployment and management of your applications. This helps you be more efficient as you
don’t need to worry about resource procurement, capacity planning, software maintenance,
patching, or any of the other undifferentiated heavy lifting involved in running your
application.

Software as a Service (SaaS)

Software as a Service (SaaS) provides you with a completed product that is run and managed
by the service provider. In most cases, people referring to Software as a Service are referring
to end-user applications. With a SaaS offering you do not have to think about how the service
is maintained or how the underlying infrastructure is managed; you only need to think about
how you will use that particular piece of software. A common example of a SaaS application is
web-based email which you can use to send and receive email without having to manage
feature additions to the email product or maintain the servers and operating systems that the
email program is running on.

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