All and only relevant chapters required for AZ-900 Certification. Extra
attachments included
I scored myself a 905/1000 with this summary.
28 FEBRUARY 2024
THIJS KUSTERS
Copyright: sharing without permission is not tolerated
,Table of Contents
1. Introduction ................................................................................................................... 2
2. Cloud Concepts ............................................................................................................. 4
3. Azure Architecture.......................................................................................................... 7
4. Compute ..................................................................................................................... 11
5. Networking .................................................................................................................. 14
6. Storage ........................................................................................................................ 19
7. Authentication and Authorization .................................................................................. 23
8. Security ....................................................................................................................... 28
9. Monitoring and Management ........................................................................................ 30
10. Pricing ......................................................................................................................... 34
Attachments ........................................................................................................................ 44
,“Update: This course has been updated to meet the May 2022 changes to the AZ-900 exam
blueprint.
Hi, Cloud Gurus! In early 2019, Microsoft developed the AZ-900 Microsoft Azure Fundamentals
certification as an entry point for all students keen to begin navigating their way around the
Azure cloud platform. As cloud enthusiasts, we want to ensure that you have all the teaching
and resources available to introduce you to Microsoft Azure. As the second most commonly
used cloud vendor, it's become increasingly important for students to understand and
experience the Azure ecosystem. A Cloud Guru has partnered with Microsoft to create this
course for you. In this course, we'll teach you about all the topics covered in the exam blueprint,
including: * Cloud concepts * Azure architecture and services * Azure management and
governance To further support your Azure learning, we created practical labs to give you the best
base to become familiar with the Azure portal. Not only are these labs a way to put your learning
into practice, but they have been made as relevant, and applicable to real-life scenarios, as
possible. We've paired your lessons with additional resources available in the Microsoft Learn
platform. By the end of this course, you will have the best foundation to comfortably explore the
Azure cloud platform further and confidently sit the Microsoft Azure Fundamentals exam.”
Source: PluralSight & Microsoft
, 1. Introduction
Command Line Interface (CLI): used to perform same actions in the Azure portal as with the
portal (mouse manually).
Benefits of the CLI:
Windows PowerShell can also be used for Azure similar as the Azure portal. PowerShell makes
use of Cmdlets; a script that performs a specific task. The cmdlets (commands) call the Azure
REST API to perform management tasks in Azure. For instance, “New-AzVm” creates a new
Virtual machine. PowerShell also uses the Resource Managers like the Azure portal, to
manipulate Azure resources. PowerShell is used for other purposes than Azure as well.
The Cloud Shell is an interactive, browser-accessible shell for managing Azure resources. Both
stand-alone as a browser version, or the Azure In-portal version. It is also available on your
mobile devices. Supports both Azure PowerShell AND CLI (Bash). The Bash (Azure CLI)
experience is similar to the CLI.
Cloud Shell Benefits:
Azure Mobile Apps are available on Android and iOS, to be alerted and respond to
emergencies, or just perform general maintenance.
Azure Resource Manager (ARM) template to automate and replicate tasks, actions and
processes. ARM is the gatekeeper for
managing anything in Azure:
• Describe, delete, alter, update or
create any resource
• Common language used in Syntax
, • Idempotent actions; meaning that applying it once or multiple times has the exact
same effect
• JSON language
ARM template benefits:
The Azure Advisor makes recommendations over five area’s that Azure wants you to improve:
• Costs
• Reliability
• Security
• Performance
• Operational Excellence
2. Cloud Concepts
High availability means that you have quick access to (extra) servers and that if one of the
servers would fail, it gets replaced instantly. Clusters are used for identical groups of Virtual
Machines (VM) to ensure high availability. Sometimes it seems to be like infinite availability, but
it is not.
Reliability is used for topics such as fault tolerance or disaster recovery. The cloud system is
reliable and can quickly recover from failures and continue to function. If a server or resources
fails this will be mitigated and dealt with the Azure system itself, usually automatically. There
are two strategies used for reliability: 1) deploy in multiple locations, 2) no single point of
failure. Where 1 means to have a global-scale computing and protection against regional
failure/disaster. And where 2 means to have resources in multiple locations and computers
which can take over the load if necessary.
Scalability is the process of adding more resources on an as-needed basis. You can scale-out
(add more VM’s), scale-up (add more power in the VM’s), or scale-down (add less power to the
VM’s). Auto-scaling can be applied to scale either way automatically based on rules (for
instance timeslots) to meet demand. Scalability also covers decreasing resources when
demand drops.
Horizontal scaling = Adding additional VMs/containers → most used in cloud
• Scale Out
Vertical scaling = increase power (e.g. CPU/RAM) of existing VMs
, • Scaling Up
Predictability means to both predict the performance and costs. Where performance focusses
on consistent experience for customers regardless of traffic. Autoscaling, load balancing and
high availability support this performance. Where costs will not lead to surprises, and resource
usage will be tracked and forecasted in real time to accurately predict the costs.
Security means being in full control of the security of our cloud resources, which can include
full control such as infrastructure as a service (IaaS) services, or handling off some security in
control over to Microsoft for more managed platform as a service (PaaS) services. Which takes
out patches, maintenance, network control and more.
Governance is the ability or capability to establish corporate standards for our different Azure
development environments, including restrictions on deployed resources when necessary.
These allow us to create standardized environments that uphold to a corporate standard, many
of which are required for different government regulatory requirements and we have the ability
to audit our existing resources in case any of those resources are outside of our corporate
compliance standard.
Manageability has actually two aspects 1) management of the cloud and 2) management in the
cloud. Management of the cloud refers to how you manage your different cloud resources,
such as automatically scaling resources, monitoring, template-based deployments.
Management in the cloud refers how we are able to manage and interact with our different
cloud resources, such as Azure Portal, Azure CLI and API’s.
CapEx refers to money spent by a business or organization on acquiring or maintaining fixed
assets, such as land, buildings, and, equipment.
OpEx refers to ongoing costs for running a product, business, or system on a day-to-day basis,
including annual costs. You pay for the resources you use, not the time it’s turned on.
Comparing ROI to CapEx and OpEx reveals the cloud is a great way to switch ID spending to a
pay-as-you-go model and reduce CapEx.
Consumption-based-pricing means: low usage = low costs, high usage = high costs
Infrastructure-as-a-
Service (IaaS): offering
includes VM’s, storage,
networking components,
firewall and the physical
hardware everything runs
on.
→Ex. Lift and
Shift & Testing and
Development
Platform-as-a-Service (PaaS): Includes infrastructure, service, storage and networking (IaaS),
but also middleware, development tools, business intelligence, services and database
management systems. PaaS is designed to support the complete web application lifecycle:
from building, testing, deploying, managing, to updating.
