Cloud Computing Fundamentals

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Questions and Answers

What is the consumption-based model often used in cloud computing referred to in the content?

pay-as-you-go

What are the advantages of Reserved Instances (RIs) in cloud computing?

Predictable billing (correct)

Less flexibility to scale down

Cost savings (up to 75% discount) (correct)

Requires upfront commitment

Vertical scaling in the cloud refers to adding more resources to better handle increased demand.

False

Serverless computing is a cloud computing execution model where the cloud provider automatically manages the infrastructure, allowing developers to focus on building and running applications without worrying about server ________.

management Signup and view all the answers

Match the cloud service with its description:

Azure Functions = A serverless compute service for event-driven code execution Azure Logic Apps = A cloud service for automating workflows and integrating apps Azure Event Grid = An event routing service for real-time event handling Azure Durable Functions = An extension of Azure Functions for writing stateful functions Signup and view all the answers

What is cloud computing?

Cloud computing is the delivery of computing services over the internet. Signup and view all the answers

Explain the Shared Responsibility Model.

The Shared Responsibility Model outlines the division of security responsibilities between the cloud provider and the customer. Signup and view all the answers

Which of the following are cloud deployment models?

Private Cloud Signup and view all the answers

Private cloud provides greater control but fewer benefits compared to public cloud.

True Signup and view all the answers

______ is a computing environment that uses both public and private clouds in an interconnected setup.

Hybrid cloud Signup and view all the answers

Match the cloud service type with the correct examples:

Infrastructure as a Service (IaaS) = AWS EC2, Microsoft Azure VMs, Google Cloud Compute Engine Platform as a Service (PaaS) = Google App Engine, Microsoft Azure App Services, AWS Elastic Beanstalk Software as a Service (SaaS) = Microsoft Office 365, Google Workspace, Salesforce Signup and view all the answers

What is the main responsibility of a cloud provider in terms of physical security and infrastructure?

Physical security of datacenters, power, network connectivity, and application development and patching. Signup and view all the answers

Which cloud service type is suitable for disaster recovery and development and testing environments without upfront hardware costs?

Infrastructure as a Service (IaaS) Signup and view all the answers

Which cloud service type is ideal for developing, deploying, and managing web and mobile applications without worrying about the underlying infrastructure?

Platform as a Service (PaaS) Signup and view all the answers

Which cloud service type is suitable for using cloud-based email and collaboration tools to enhance productivity?

Software as a Service (SaaS) Signup and view all the answers

What is one of the pillars of the Microsoft Azure Well-Architected Framework that heavily influences both performance and cost predictability in the cloud?

Reliability Signup and view all the answers

Which cloud concept supports performance predictability by focusing on predicting the resources needed to deliver a positive experience for customers?

All of the above Signup and view all the answers

In the cloud, cost predictability is focused on tracking resource use in real time and applying data analytics to find patterns and trends to better plan resource deployments.

True Signup and view all the answers

To ensure that all deployed resources meet corporate standards and government regulatory requirements, set templates help enforce ____________. (Fill in the blank)

governance Signup and view all the answers

Match the cloud service type with its description:

IaaS = Provides maximum control for cloud resources PaaS = Middle ground between infrastructure as a service and software as a service SaaS = Complete cloud service model where you rent a fully developed application Signup and view all the answers

Study Notes

Describe Cloud Concepts

Cloud Computing: The delivery of computing services over the internet, including virtual machines, storage, databases, and networking, as well as IoT, Machine Learning, and Artificial Intelligence.

Shared Responsibility Model

Definition: Outlines the division of security responsibilities between Microsoft and the customer when using Azure services.
Responsibilities:
- IaaS: Customer is responsible for virtual machines, operating systems, applications, data, and network controls, while Microsoft manages the physical infrastructure, host operating system, and network.
- PaaS: Customer focuses on securing applications, data, and identity management, while Microsoft manages the physical infrastructure, network, host operating system, and platform services.
- SaaS: Customer manages data and user access, while Microsoft takes care of infrastructure, application, and platform security.

Cloud Models

Private Cloud:
- Definition: A cloud used by a single entity, providing greater control and security.
- Use Cases: Regulated industries, custom enterprise applications, high-performance computing.
Public Cloud:
- Definition: A cloud built, controlled, and maintained by a third-party cloud provider, accessible to anyone.
- Use Cases: Scalable applications, development and testing, disaster recovery and backup, SaaS.
Hybrid Cloud:
- Definition: An environment that uses both public and private clouds in an interconnected environment.
- Use Cases: Cloud bursting, disaster recovery, DevOps and agile development, IoT applications.

Consumption-Based Model

Definition: A pricing model where customers pay only for the resources they use.
Benefits: No upfront cost, flexible, and cost-efficient for variable workloads.

Cloud Pricing Models

Pay-As-You-Go (PAYG):
- Description: Charges based on actual usage of resources.
- Use Cases: Unpredictable workloads, development and testing, startups, and short-term projects.
Reserved Instances (RIs):
- Description: Users commit to using specific resources for a fixed period in exchange for a discount.
- Use Cases: Steady-state workloads, long-term projects, and predictable usage patterns.
Spot Instances:
- Description: Users bid for unused cloud capacity at potentially lower prices.
- Use Cases: Flexible, non-critical workloads like batch processing, data analysis, and testing.

Serverless Computing

Definition: A cloud computing execution model where the cloud provider automatically manages the infrastructure.
Key Characteristics:
- Abstraction of Servers: Developers do not need to manage server infrastructure.
- Event-Driven: Applications and services are triggered by events.
- Scalability: Automatically scales in response to the workload.
- Pay-Per-Use: Users are billed based on actual usage.
- Managed Services: Azure provides managed services like Azure Functions, Azure Logic Apps, and Azure Event Grid.
Benefits: Focus on code, cost efficiency, automatic scaling, increased productivity, and integration.### Event-Driven Applications
Developing applications that respond to events from various sources, such as user actions, system changes, or external triggers.

Benefits of Cloud Services

High Availability and Scalability

High Availability: maximum availability, regardless of disruptions or events that may occur.
Scalability: the ability to adjust resources to meet demand; cost-saving as you only pay for what you use.
Types of Scalability:
- Vertical Scaling: increasing power and resources to a single system (e.g., adding more CPU or RAM).
- Horizontal Scaling: increasing resources by adding more systems (e.g., adding more virtual machines).

Reliability and Predictability

Reliability: the ability of a system to recover from failures and continue to function.
Predictability: the ability to forecast performance and cost.
Factors influencing predictability:
- Performance: predicting resources needed to deliver a positive customer experience.
- Cost: predicting or forecasting cloud spend.
Tools for predicting cost:
- Cloud analytics and information
- Total Cost of Ownership (TCO) or Pricing Calculator

Security and Governance

Governance: ensuring resources meet corporate standards and regulatory requirements.
Security: maximizing control of security; physical resources, operating systems, and software patches.
Cloud-based auditing helps flag non-compliant resources.

Manageability

Management of the Cloud: managing cloud resources.
Management in the Cloud: managing cloud environment and resources using tools like PowerShell.

Cloud Service Types

Infrastructure as a Service (IaaS)

Most flexible category of cloud services
Cloud provider maintains hardware, network connectivity, and physical security
User responsible for operating system, configuration, and maintenance
Use cases:
- Disaster recovery
- Development and testing

Platform as a Service (PaaS)

Middle ground between IaaS and SaaS
Cloud provider maintains physical infrastructure, operating systems, middleware, and development tools
User responsible for networking settings, application security, and directory infrastructure
Use cases:
- Web and mobile app development
- Microservices architecture
- API development and management

Software as a Service (SaaS)

Most complete cloud service model
Cloud provider maintains all aspects of the application
User responsible for data, devices, and user access
Use cases:
- Email and collaboration
- Customer relationship management (CRM)
- Enterprise resource planning (ERP)

Identifying Appropriate Use Cases

IaaS: disaster recovery, development and testing
PaaS: web and mobile app development, microservices architecture, API development and management
SaaS: email and collaboration, CRM, ERP

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Description

This quiz covers the basics of cloud computing, including definitions, models, and use cases. Test your knowledge of cloud concepts and responsibility models.