AWS Cloud Intro and Concepts

Question 1

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.

Answer 1

Cloud Computing

Question 2

6 Advantages of Cloud

Answer 2

-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.

Question 3

“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:

Answer 3

Trade capital expense for variable expense

Question 4

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:

Answer 4

Benefit from massive economies of scale

Question 5

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:

Answer 5

Stop guessing about capacity

Question 6

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:

Answer 6

Increase speed and agility

Question 7

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:

Answer 7

Stop spending money running and maintaining data centers

Question 8

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:

Answer 8

Go global in minutes

Question 9

• Reducing risk
• Scalability
• Agility
• Elasticity
• Reliability
• Security of data

Answer 9

Benefits of Cloud Computing

Question 10

The ability to resize your resources as necessary

Answer 10

Scalability

Question 11

Benefits of ‘scalability

Answer 11

• Adapt their consumption of services to meet seasonal requirements
• Launch new services or products
• Accommodate new strategic directions

Question 12

• Increasing speed
• Ease of experimentation — can lead to discovery of innovations and new configurations
• Cultivating a culture of innovation

Answer 12

Three main factors of ‘agility’

Question 13

Power to scale computing resources up or down based on demand

Answer 13

Elasticity

Question 14

Benefits of elasticity

Answer 14

• 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

Question 15

Ability of a system to recover from failures

Answer 15

Reliability

Question 16

What does ‘reliability’ include?

Answer 16

• 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

Question 17

Amazon data centers in geographic regions that have multiple isolated locations known as Availability Zones

Answer 17

AWS Regions

Question 18

Consist of one or more discrete data centers with each having redundant power, networking, and connectivity capabilities housed in separate facilities

Answer 18

Availability Zones

Question 19

Benefits of Availability Zones

Answer 19

• 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

Question 20

Systems can remain operational even if some of its components fail

Answer 20

Fault-Tolerance

Question 21

Benefits of fault tolerance

Answer 21

Its high availability ensures systems are functioning and accessible while downtime is minimized as much as possible without the need for human intervention

Question 22

What does ‘security of data’ include?

Answer 22

• 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

Question 23

-Infrastructure as a service (IaaS)

-Platform as a service (PaaS)

-Software as a service (SaaS)

Answer 23

3 common types of cloud computing model

Question 24

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.

Answer 24

Infrastructure as a Service (IaaS)

Question 25

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.

Answer 25

Platform as a Service (PaaS)

Question 26

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.

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.

Answer 26

Software as a Service (SaaS)

Question 27

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.

Answer 27

3 common types of cloud deployment

Question 28

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.

Answer 28

Public Cloud Deployment

Question 29

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 this 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.

Answer 29

Hybrid Cloud Deployment

Question 30

The deployment of resources on-premises, using virtualization and resource management tools, is sometimes called the “private cloud.”

Answer 30

On-premises Cloud Deployment