EXAM 98- 369

Cloud Fundamentals

98-369: OBJECTIVE 1Understand the Cloud

LESSON

1.4Describe the Different Types of Cloud Services

In this lesson, you will review the following:• Differentiate between types of cloud services and their

characteristics, including IaaS, PaaS, and SaaS• Integrate the cloud with on-premises services in hybrid

scenarios

LESSON OVERVIEW

Answer the following questions:• What choices does a consumer have in selecting and

accessing cloud services?

• Why would a user opt to use a hybrid model of cloud services?

GUIDING QUESTIONS

• Cloud options are categorized by the following service models:– SaaS delivers end-user software via cloud computing. Example:

Office 365– PaaS delivers application execution services, such as application

runtime, storage, and integration. Example: Microsoft Azure Websites

– IaaS delivers access to fundamental resources, such as physical machines, virtual machines, and virtual storage. Example: Microsoft Azure Virtual Machines

CLOUD SERVICE MODELS

DELIVERY MODELS COMPAREDType Consumer Service Provided Examples

SaaS End user Finished application

Office 365, Office ProPlus, SharePoint Online

PaaS Application owner/developer

Runtime environment for application codeCloud storageIntegration and other services

Microsoft Azure Websites, Microsoft SQL Azure

IaaS Application owner or IT provider

Virtual serverCloud storage

Microsoft Azure Virtual Machines

On-PremisesDining

tableSoda

Electric/gasOvenFirePizza doughTomato sauce

ToppingsCheese

Made at home

IaaSDining tableSoda

Electric/gasOvenFirePizza doughTomato sauce

ToppingsCheese

Take and bake

PaaSDining tableSoda

Electric/gasOvenFirePizza doughTomato sauce

ToppingsCheese

Pizza delivered

SaaSDining tableSoda

Electric/gasOvenFirePizza doughTomato sauce

ToppingsCheese

Dined out

You manage

Vendor manages

IF EATING WAS AN IT SERVICE…

Demonstrate your understanding of these concepts. Work with a partner to think of another analogy for the various types of cloud-based IT services. Describe the service equivalent of each of the following by using the common terminology of your analogy theme:• On-premises• IaaS• PaaS• SaaS

CAN YOU THINK OF ANOTHER ANALOGY?

CLOUD DEPLOYMENT MODELSDeployment Type

Hosting Location

Shared or Dedicated

Architectural Control

Scalability Investment

Shared public cloud External Shared Provider or

marketMinimal constraints Pay as you go

Dedicated public cloud External

Partially or fully dedicated

Provider or market

Constrained by contract

Pay as you go

Self-hosted private cloud

Internal Fully dedicated Self

Constrained by capital investment

Build the cloud, share services

Hosted private cloud

External Fully dedicated Self

Constrained by capital investment or contract

Varies by contract, may or may not have capital impact

Private cloud appliance

Internal Fully dedicated Provider

Constrained by offering

Varies by contract, may or may not have capital impact

• It is often possible to provide IT by utilizing a mix of public and private cloud services

• A few examples:– A company might use Office 365 for most of its IT services, but run a

specialized application it needs on a local server– An organization that needs to store highly sensitive information may

choose to host that data internally for compliance reasons, but may still leverage public cloud resources for other storage needs

– A specific team may need the increased performance of a private cloud, while the rest of the company can take advantage of savings from public cloud usage

HYBRID CLOUD ENVIRONMENTS

• You can use a hybrid configuration as part of a migration to fully cloud-based services

• You can also use a hybrid configuration to temporarily increase resources during times of need

• Finally, an organization may wish to switch to the cloud but has invested in local datacenters; a hybrid cloud allows them to utilize that equipment while still realizing benefits of cloud computing

HYBRID CLOUD ENVIRONMENTS (CONT.)

IN-CLASS ACTIVITYComplete 98-369-ENU-IC-1.4:1. Read the scenario2. Review the website3. Answer the questions

REVIEWCan you answer the following?• What choices does a consumer have in selecting and

accessing cloud services? • Why would a user opt to use a hybrid model of cloud

services?

ADDITIONAL RESOURCESTechNet and MSDN ResourcesHybrid Cloud Infrastructure Solution for Enterprise IT - Overview

http://aka.ms/rzi96l

What is Infrastructure as a Service? http://aka.ms/oymyk2Hybrid Cloud: The Best of Both Worlds - An Introduction to the Benefits of Hybrid Cloud

http://aka.ms/mcfgx0

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