Microsoft Azure - 1.1 - Describe Cloud Computing

Cloud computing

The delivery of computing services over the internet

Virtual Machines

Storage

Databases

Networking

Computing services include common IT infrastructure such as (4)

AI

Machine Learning

Internet of Things

Cloud services also expand the traditional IT offerings to include (3)

Compute Power

Storage

Basic Services offered by all Cloud Providers (2)

Compute Power

How much processing your computer can do that can be added or removed

Storage

The Volume of data you can store on your computer where more can be requested as needed

Space

Security

Maintenance/Replacement of Servers

Infrastructure and System Maintenance

System Patches

What is shared in the Shared Responsibility Model? (5)

Physical Security

Power

Cooling

Network Connectivity

In cloud computing, cloud providers typically take on the following in the shared responsibility model (4)

Data and Information

Access Security

In cloud computing, consumers typically take on the following in the shared responsibility model (2)

Everything

What are on-site data centers responsible for?

Infrastructure as a Service

Platform as a Service

Software as a Service

The Shared Responsibility Model is heavily tied to cloud service types, such as (3)

Infrastructure as a Service

Places the most responsibility on the consumer where the cloud provider is only responsible for the basics of physical security, power, and connectivity

Platform as a Service

Evenly distributes responsibility between the cloud provider and the consumer

Software as a Service

Places most of the responsibility with the cloud provider

Information and Data

Devices

Accounts and identities

When using a cloud provider, you’ll always be responsible for (3):

Physical Data Center

Physical Network

Physical hosts

The cloud provider is always responsible for (3):

OS

Network controls

Applications

Identity and Infrastructure

Your service model will determine responsibility for things like (4):

Cloud models

Defines the deployment type of cloud resources

Private

Public

Hybrid

What are the three types of cloud models?

Private cloud model

Provides much greater control for the company and its IT department, may be hosted from onsite, offsite, or third party data centers, and comes at a greater cost than other models

Public cloud model

Built, controlled, and maintained by a third party cloud provider where anyone that wants to purchase cloud services can access and use resources. There is general public availability

Hybrid Cloud Model

Uses both public and private clouds in an inter-connected environment. It can be used to allow a private cloud to surge for increased, temporary demand by deploying public cloud resources and can be used to provide an extra layer of security

No capital expenditures to scale up

Applications can be quickly provisioned and deprovisioned

Organizations pay only for what they use

Organizations don’t have complete control over resources and security

Characteristics of Public cloud: (4)

Organizations have complete control over resources and security

Data is not collocated with other organizations’ data

Hardware must be purchased for startup and maintenance

Organizations are responsible for hardware maintenance and updates

Characteristics of Private Cloud: (4)

Provides the most flexibility

Organizations determine where to run their applications

Organizations control security, compliance, or legal requirements

Characteristics of Hybrid cloud (3)

Capital Expenditure (CapEx)

Operational Expenditure (OpEx)

When comparing IT infrastructure models, there are two types of expenses to consider

Capital Expenditure

Typically a one time, up front expenditure to purchase or secure tangible resources

Operational Expenditure

Spending money on services or products over time with no upfront costs that is consumption based.

Cloud computing is consumption based

Why does cloud computing fall under OpEx?

No upfront costs

No need to purchase and manage infrastructure

Pay for what you need

Stop paying for what you don’t need

Benefits of the Consumption based model (4)

You must estimate the future resource needs

Can be costly if you overestimate

Can lead to decreased performance if you underestimate

Can take a while to upgrade equipment to meet demand

Cons of using traditional datacenters (4)

pay-as-you-go pricing

Cloud computing is the delivery of computing services over the internet by using a ___ model.

Plan and manage your operating costs.

Run your infrastructure more efficiently.

Scale as your business needs change.

You typically pay only for the cloud services you use, which helps you (3):