AWS Cloud Computing Concepts Flashcards
What are the 6 Advantages of the Cloud?
- Trade capital expense for variable expense.
- Benefit from massive economies of scale.
- Stop guessing about capacity.
- Increase speed and agility.
- Stop spending money running and maintaining data centers.
- Go global in minutes.
What is Trade capital expense for variable expense?
Instead of having to invest heavily in data centers and servers before you know how you’re going to use them, you can pay only when you consume computing resources, and pay only for how much you consume.
What is Benefit from massive economies of scale?
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 is aggregated in the cloud, providers such as AWS can achieve higher economies of scale, which translates into lower pay as-you-go price.
What is Stop guessing about capacity?
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.
What is Increase speed and agility?
In a cloud computing environment, 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.
What is Stop spending money running and maintaining data centers?
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.
What is Go global in minutes?
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.
What are the 3 Cloud Computing Models?
Infrastructure as a service (IaaS).
Platform as a service (PaaS).
Software as a service (SaaS).
What is 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 very similar to the existing IT resources that many IT departments and developers are familiar with today.
What is 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.
What is 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 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.
SaaS provides high availability, fault tolerance, scalability an elasticity.
What are the 3 Types of Cloud Deployment?
Public Cloud – e.g. AWS, Microsoft Azure, Google Cloud Platform (GCP).
Hybrid Cloud – a mixture of public and private clouds.
Private Cloud (on-premises) – a cloud managed in your own data center, e.g. Hyper-V, OpenStack, VMware.
What is Public Cloud?
A cloud-based application is fully deployed in the cloud and all parts of the application run in the cloud. Applications in the cloud have either been created in the cloud or have been migrated from an existing infrastructure to take advantage of the benefits of cloud computing.
Cloud-based applications can be built on low-level infrastructure pieces or can use higher level services that provide abstraction from the management, architecting, and scaling requirements of core infrastructure.
What is Hybrid Cloud?
A hybrid deployment is a way to connect infrastructure and applications between cloud-based resources and existing resources that are not located in the cloud.
The most common method of hybrid deployment is between the cloud and existing on-premises infrastructure to extend, and grow, an organization’s infrastructure into the cloud while connecting cloud resources to the internal system.
What is On-premises?
The deployment of resources on-premises, using virtualization and resource management tools, is sometimes called the “private cloud.”
On-premises deployment doesn’t provide many of the benefits of cloud computing but is sometimes sought for its ability to provide dedicated resources.
In most cases this deployment model is the same as legacy IT infrastructure while using application management and virtualization technologies to try and increase resource utilization.
