Intro to AWS Flashcards
What is a client?
In computing, a client can be a web browser or desktop application that a person interacts with to make requests to computer servers. A server can be services such as Amazon Elastic Compute Cloud (Amazon EC2), a type of virtual server.
First AWS Key value?
So, pay for what you need, becomes the first key value of many for running your business on AWS.
What is cloud computing?
Cloud computing is the on-demand delivery of IT resources over the internet with pay-as-you-go pricing.
Cloud computing is the on-demand delivery of compute power, database, storage, applications, and
other IT resources through a cloud services platform via the Internet with pay-as-you-go pricing.
Whether you are running applications that share photos to millions of mobile users or you’re supporting
the critical operations of your business, a cloud services platform provides rapid access to flexible and
low-cost IT resources. 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 exactly the right type and size of computing resources you need to power your newest bright
idea or operate 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 servers, storage, databases and a broad set of
application services over the Internet. A cloud services platform such as Amazon Web Services owns and
maintains the network-connected hardware required for these application services, while you provision
and use what you need via a web application.
What are the 3 deployment cloud computing models?
cloud-based, on-premises, and hybrid.
What is cloud based deployment?
Run all parts of the application in the cloud.
Migrate existing applications to the cloud.
Design and build new applications in the cloud.
In a cloud-based deployment model, you can migrate existing applications to the cloud, or you can design and build new applications in the cloud. You can build those applications on low-level infrastructure that requires your IT staff to manage them. Alternatively, you can build them using higher-level services that reduce the management, architecting, and scaling requirements of the core infrastructure.
For example, a company might create an application consisting of virtual servers, databases, and networking components that are fully based in the cloud.
What are the benefits of cloud computing?
Trade upfront expense for variable expense
Stop spending money to run and maintain data centers
Stop guessing capacity
Benefit from massive economies of scale
Increase speed and agility
Go global in minutes
What is on-premises deployment?
Deploy resources by using virtualization and resource management tools.
Increase resource utilization by using application management and virtualization technologies.
On-premises deployment is also known as a private cloud deployment. In this model, resources are deployed on premises by using virtualization and resource management tools.
For example, you might have applications that run on technology that is fully kept in your on-premises data center. Though this model is much like legacy IT infrastructure, its incorporation of application management and virtualization technologies helps to increase resource utilization.
What is hybrid deployment?
Connect cloud-based resources to on-premises infrastructure.
Integrate cloud-based resources with legacy IT applications.
In a hybrid deployment, cloud-based resources are connected to on-premises infrastructure. You might want to use this approach in a number of situations. For example, you have legacy applications that are better maintained on premises, or government regulations require your business to keep certain records on premises.
For example, suppose that a company wants to use cloud services that can automate batch data processing and analytics. However, the company has several legacy applications that are more suitable on premises and will not be migrated to the cloud. With a hybrid deployment, the company would be able to keep the legacy applications on premises while benefiting from the data and analytics services that run in the cloud.
Trade upfront expense for variable expense
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Upfront expense refers to data centers, physical servers, and other resources that you would need to invest in before using them. Variable expense means you only pay for computing resources you consume instead of investing heavily in data centers and servers before you know how you’re going to use them.
By taking a cloud computing approach that offers the benefit of variable expense, companies can implement innovative solutions while saving on costs.
Stop spending money to run and maintain data centers
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Computing in data centers often requires you to spend more money and time managing infrastructure and servers.
A benefit of cloud computing is the ability to focus less on these tasks and more on your applications and customers.
Stop guessing capacity
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With cloud computing, you don’t have to predict how much infrastructure capacity you will need before deploying an application.
For example, you can launch Amazon EC2 instances when needed, and pay only for the compute time you use. Instead of paying for unused resources or having to deal with limited capacity, you can access only the capacity that you need. You can also scale in or scale out in response to demand.
Benefit from massive economies of scale
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By using cloud computing, you can achieve a lower variable cost than you can get on your own.
Because usage from hundreds of thousands of customers can aggregate in the cloud, providers, such as AWS, can achieve higher economies of scale. The economy of scale translates into lower pay-as-you-go prices.
Increase speed and agility
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The flexibility of cloud computing makes it easier for you to develop and deploy applications.
This flexibility provides you with more time to experiment and innovate. When computing in data centers, it may take weeks to obtain new resources that you need. By comparison, cloud computing enables you to access new resources within minutes.
Go global in minutes
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The global footprint of the AWS Cloud enables you to deploy applications to customers around the world quickly, while providing them with low latency. This means that even if you are located in a different part of the world than your customers, customers are able to access your applications with minimal delays.
Later in this course, you will explore the AWS global infrastructure in greater detail. You will examine some of the services that you can use to deliver content to customers around the world.
