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Azure -AZ-900
Azure Fundamentals Stack
| Question | Answer |
|---|---|
| What is cloud computing? | Cloud computing is the delivery of computing services—servers, storage, databases, networking, software, analytics, intelligence and more—over the internet (the cloud), enabling faster innovation, flexible resources, and economies of scale. |
| What are benefits of Cloud? | You typically pay only for cloud services you use, helping lower your operating costs, run your infrastructure more efficiently, and scale as your business needs change. |
| High Availability | The ability to keep services up and running for long periods of time, with very little downtime, depending on the service in question |
| Scalability | The ability to increase or decrease resources for any given workload. Scalability doesn't have to be done automatically |
| Elasticity | The ability to automatically or dynamically increase or decrease resources as needed. Elasticity can be done automatically |
| Agility | The ability to react quickly. Cloud services can allocate and deallocate resources quickly. They are provided on-demand via self-service, so vast amounts of computing resources can be provisioned in minutes. |
| Fault tolerance | The ability to remain up and running even in the event of a component or service no longer functioning. |
| Disaster recovery | The ability to recover from an event which has taken down a cloud service. Cloud services disaster recovery can happen very quickly with automation and services being readily available to use. |
| Global reach | The ability reach audiences around the globe. Cloud services can have presence in various regions across the globe which you can access, giving you a presence in those regions even though you may not have any infrastructure in that region. |
| Customer latency capabilities | If customers are experiencing slowness with a particular cloud service, they are said to be experiencing some latency. Even though modern fiber optics are fast, it can still take time for services to react to customer actions if the service is not local t |
| Predictive cost considerations | The ability for users to predict what costs they will incur for a particular cloud service. Costs for individual services are made available, and tools are provided to allow you predict what costs a service will incur. |
| Technical skill requirements and considerations | Getting a workload up and running with cloud services demands less technical resources than having IT teams build and maintain physical infrastructure for handling the same workload |
| Increased productivity | On-site datacenters typically require a lot of hardware setup, software patching, and other time-consuming IT management chores. Cloud computing eliminates the need for many of these tasks |
| Security | Cloud providers offer a broad set of policies, technologies, controls, and expert technology skills that can provide better security than most organizations can otherwise achieve. |
| What is Economies of Scale? | The concept of economies of scale is the ability to do things more cheaply and more efficiently when operating at a larger scale in comparison to operating at a smaller scale |
| Capital Expenditure (CapEx) | This is the spending of money on physical infrastructure up front, and then deducting that expense from your tax bill over time. CapEx is an upfront cost which has a value that reduces over time |
| Operational Expenditure (OpEx) | This is spending money on services or products now and being billed for them now. You can deduct this expense from your tax bill in the same year. There is no upfront cost, you pay for a service or product as you use it |
| What are benefits of consumption based model | No upfront cost, No need to purchase and manage costly infrastructure that they may or may not use to its fullest, The ability to pay for additional resources if and when they are needed,The ability to stop paying for resources that are no longer needed |
| Public Cloud | A public cloud is owned by the cloud services provider (also known as a hosting provider) |
| What does Public Cloud provide? | It provides resources and services to multiple organizations and users, who connect to the cloud service via a secure network connection, typically over the internet |
| Characteristics of Public Cloud | Ownership Multiple End Users Public Access Availability Connectivity Skills |
| Private Cloud | A private cloud is owned and operated by the organization that uses the resources from that cloud |
| What does Private Cloud provide? | it provide self-service access to compute resources to users within their organization. The organization remains the owner, entirely responsible for the operation of the services they provide. |
| Characteristics of Private Cloud | Ownership Hardware Users Connectivity Public Access Skills |
| Hybrid Cloud | A hybrid cloud combines both public and private clouds, allowing you to run your applications in the most appropriate location |
| Characteristics of Hybrid Cloud | Resource location Cost and efficiency Control Skills |
| Advantages of Public Cloud | No Capex, Agility, Consumption-based model, Maintenance, Skills |
| Disadvantages of Public Cloud | Security, Compliance, Ownership, Specific Scenarios |
| Advantages of Private Cloud | Control, Security, Compliance, |
Created by:
ratish.jayemb