Download Microsoft.AZ-900.NewDumps.2021-08-06.186q.tqb

When you are implementing a Software as a Service (SaaS) solution, you are responsible for configuring the SaaS solution. Everything else is managed by the cloud provider.  5 / 142  The safer , easier way to help you pass any IT exams.  SaaS requires the least amount of management. The cloud provider is responsible for managing everything, and the end user just uses the software.  Software as a service (SaaS) allows users to connect to and use cloud-based apps over the Internet.  Common examples are email, calendaring and office tools (such as Microsoft Office 365).  SaaS provides a complete software solution which you purchase on a pay-as-you-go basis from a cloud service provider. You rent the use of an app for your organization and your users connect to it over the Internet, usually with a web browser. All of the underlying infrastructure, middleware, app software and app data are located in the service provider’s data center. The service provider manages the hardware and software and with the appropriate service agreement, will ensure the availability and the security of  the app and your data as well.  References: https://azure.microsoft.com/en-in/overview/what-is-saas/ https://docs.microsoft.com/en-gb/learn/modules/principles-cloud-computing/5-types-of-cloud-services

Fault tolerance is the ability of a system to continue to function in the event of a failure of some of its  components.  In this question, you could have servers that are replicated across datacenters.  Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. To ensure resiliency, there are a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures.  With Availability Zones, Azure offers industry best 99.99% VM uptime SLA. By architecting your solutions to use replicated VMs in zones, you can protect your applications and data from the loss of a datacenter.  If one zone is compromised, then replicated apps and data are instantly available in another zone.  References: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/manage-availability

A private cloud is hosted in your datacenter. Therefore, you cannot close your datacenter if you are using a private cloud.  A public cloud is hosted externally, for example, in Microsoft Azure. An organization that hosts its infrastructure in a public cloud can close its data center.  Public cloud is the most common deployment model. In this case, you have no local hardware to manage or keep up-to-date – everything runs on your cloud provider's hardware.  Microsoft Azure is an example of a public cloud provider.  In a private cloud, you create a cloud environment in your own datacenter and provide self-service access to compute resources to users in your organization. This offers a simulation of a public cloud to your users, but you remain completely responsible for the purchase and maintenance of the hardware and software services you provide.  References: https://docs.microsoft.com/en-gb/learn/modules/principles-cloud-computing/4-cloud-deployment-models