Organizations across the globe are now realizing the benefits of Cloud computing. They are redefining the new way of doing business with scalable & secure cloud-enabled enterprise applications. Using Azure cloud services, organizations can rapidly build, deploy, and manage simple to complex applications.
Today, Azure cloud platform is having more than 200 products and cloud services where you can build, run, and manage applications across multiple clouds, on-premises, with the tools and frameworks of your choice.
Of the Fortune 500 companies, 95 percent rely on Azure for trusted cloud services. Companies of all sizes and maturities use Azure in their digital transformation.
To understand Azure better, Use Microsoft Learning path specifically designed for Azure fundamentals.
In this series, we will cover fundamental concept of Azure which will help you to crack AZ-900 certification and will provide you basic foundation of Azure concepts.
Part-1A : Cloud Computing
Microsoft Azure is a cloud computing platform on which we build solutions to meet business goals. Azure provides a wealth of cloud-based services like remote storage, database hosting, centralized account management, artificial intelligence (AI) and Internet of Things (IoT).
In Azure Fundamentals exam AZ-900, questions are mainly from three areas-
- Cloud Concept (25-30%)
- Azure architecture and services(35-40%)
- Azure management and governance(30-35%)
Here higher the percentage means that the more questions that part of the exam will contain.
What is cloud computing?
Cloud computing means that delivery of computing services over the internet. Computing service includes-
- Virtual machines,
- Networking etc.
What is shared responsibility model?
The shared responsibility model is heavily tied into 3 types of cloud services:
- Infrastructure as a service (IaaS) – Most of the responsibility with the Consumer. In an IaaS model, the cloud provider is responsible for maintaining the hardware, network connectivity (to the internet), and physical security. You’re responsible for everything else: operating system installation, configuration, and maintenance; network configuration; database and storage configuration; and so on.
- Platform as a service (PaaS)- Middle layer of responsibilities which are evenly distributed between Consumer and Cloud provide.In a PaaS environment, the cloud provider maintains the physical infrastructure, physical security, and connection to the internet. They also maintain the operating systems, middleware, development tools, and business intelligence services that make up a cloud solution. In a PaaS scenario, you don’t have to worry about the licensing or patching for operating systems and databases.
- Software as a service (SaaS) – Most of the responsibility with the cloud provider. With SaaS, you’re essentially renting or using a fully developed application. Email, financial software, messaging applications, and connectivity software are all common examples of a SaaS implementation.
What are cloud models?
The three main cloud models are:-
- Private-provides much greater control for the consumer with greater cost and few benefits of a public cloud deployment.
- Public-built, controlled, and maintained by a third-party cloud provider. The general public availability is a key difference between public and private clouds.
- Hybrid-uses both public and private clouds in an inter-connected environment.
There is another term for cloud model is Multi-cloud. in a multi-cloud environment you deal with two (or more) public cloud providers and manage resources and security in both environments.
Azure Arc is a set of technologies that helps in managing your cloud environment whether it is public, private or multi-cloud environment.
3.Azure VMware Solution:
Azure VMware Solution lets you run your VMware workloads in Azure with seamless integration and scalability.
What is Consumption-based model?
There are two types of expenditure- Capital expenditure (CapEx) and operational expenditure (OpEx).
CapEx is typically a one-time, up-front expenditure to purchase resources. Examples- A new building, Company Vehicle etc.
OpEx is spending money on services or products over time. It means that expenditure which is recurring in nature. Examples- Renting car, Leasing building etc.
Cloud computing falls under OpEx because cloud computing operates on a consumption-based model. With cloud computing, you don’t pay for the physical infrastructure, the electricity, the security, or anything else associated with maintaining a data Centre. Instead, you pay for the IT resources you use. If you don’t use any IT resources this month, you don’t pay for any IT resources.
Cloud computing is the delivery of computing services over the internet by using a pay-as-you-go pricing model. You typically pay only for the cloud services you use.
Questions for AZ-900:
1.You have 50 virtual machines hosted on-premises and 50 virtual machines hosted in Azure. The on-premises virtual machines and the Azure virtual machines connect to each other.Which type of cloud model is this?
- A. hybrid (Ans)
- B. private
- C. public
2.Match the cloud model to the correct advantage.
3.For each of the following statements, select Yes if the statement is true. Otherwise, select No.
4.Your company plans to deploy several custom applications to Azure. The applications will provide invoicing services to the customers of the company. Each application will have several prerequisite applications and services installed.
You need to recommend a cloud deployment solution for all the applications.
What should you recommend?
- A. Software as a Service (SaaS)
- B. Platform as a Service (PaaS)
- C. Infrastructure as a Service (laaS) (Ans)
5.For each of the following statements, select Yes if the statement is true. Otherwise, select No.
6.For each of the following statements, select Yes if the statement is true. Otherwise, select No.
7.What does a customer provide in a software as a service (SaaS) model?
- A. application data (Ans)
- B. data storage
- C. compute resources
- D. application software
8.Your company plans to migrate all its data and resources to Azure.
The company X migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure.
You need to deploy an Azure environment that meets the company X migration plan.
What should you create?
- A. Azure virtual machines, Azure SQL databases, and Azure Storage accounts.
- B. an Azure App Service and Azure virtual machines that have Microsoft SQL Server installed.
- C. an Azure App Service and Azure SQL databases. (Ans)
- D. Azure storage accounts and web server in Azure virtual machines.
- A Microsoft SQL Server database that is hosted in the cloud and has software updates managed by Azure is an example of-
- disaster recovery as a service (DRaaS)
- infrastructure as a service (IaaS)
- platform as a service (PaaS) (Ans)
- software as a service (SaaS)
- PaaS (Ans)
In the next part, we will cover Benefits of Cloud Computing and related to questions.