AWS Cloud Intro and Concepts Flashcards
(30 cards)
Refers to 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.
Cloud Computing
6 Advantages of 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.
“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.”
This is an example of:
Trade capital expense for variable expense
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.
This is an example of:
Benefit from massive economies of scale
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.
Example of:
Stop guessing about capacity
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.
Example of:
Increase speed and agility
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.
Example of:
Stop spending money running and maintaining data centers
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.
Example of:
Go global in minutes
- Reducing risk
- Scalability
- Agility
- Elasticity
- Reliability
- Security of data
Benefits of Cloud Computing
The ability to resize your resources as necessary
Scalability
Benefits of ‘scalability
- Adapt their consumption of services to meet seasonal requirements
- Launch new services or products
- Accommodate new strategic directions
- Increasing speed
- Ease of experimentation — can lead to discovery of innovations and new configurations
- Cultivating a culture of innovation
Three main factors of ‘agility’
Power to scale computing resources up or down based on demand
Elasticity
Benefits of elasticity
- Quickly deploy new applications and instantly scale up as workloads grow while shutting down resources that are not required
- Ability to use AWS tools such as Auto Scaling and Elastic Load Balancing
- Efficiencies of scale
Ability of a system to recover from failures
Reliability
What does ‘reliability’ include?
- An architecture and systems in place with a well-planned foundation that handles change in demand, detects failures, and has self-automation capabilities
- AWS allowing organizations to achieve greater flexibility and capacity while reducing uncertainty of forecasting hardware needs — difficult for on-premise solutions to match
- AWS Regions
Amazon data centers in geographic regions that have multiple isolated locations known as Availability Zones
AWS Regions
Consist of one or more discrete data centers with each having redundant power, networking, and connectivity capabilities housed in separate facilities
Availability Zones
Benefits of Availability Zones
- Ability for organizations to place resources in multiple locations and operate production applications and databases that are more highly available, fault-tolerant, and scalable than is possible from just one data center
- The structure of these are intentional and directly related to Fault-Tolerance
Systems can remain operational even if some of its components fail
Fault-Tolerance
Benefits of fault tolerance
Its high availability ensures systems are functioning and accessible while downtime is minimized as much as possible without the need for human intervention
What does ‘security of data’ include?
- AWS allows complete control and ownership of your data — including regions data is stored and encrypted
- AWS provides the ability to continually monitor IT resources and spot changes at once
- Security policies can be built into the infrastructure since AWS assets are programmable resources
-Infrastructure as a service (IaaS)
-Platform as a service (PaaS)
-Software as a service (SaaS)
3 common types of cloud computing model
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.
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.
Infrastructure as a Service (IaaS)
