Public Cloud - Set up in the public network. Accessible through the internet. The client has no access to the underlying infrastructure.
Examples are AWS, Azure, GCP, IBM Cloud, Oracle Cloud.
Private Cloud - Set up on Prem. Only accessible by the organization. High security.
Examples are VMWare Cloud, Azure Stack, Red Hat OpenShift Container Platform.
Hybrid Cloud - Setup on-prem but connected to the public cloud. Sensitive data stored in on-prem, public data in the public cloud.
Examples are Azure ARC, AWS Outposts.
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What is Region: Each datacenters' location is called the region. Microsoft has more than 60 regions.
What is Zone: Some of the regions has more than one physical data centres. Great for availability in case one DC fails. Each physical DC called Zone. Where there is more than one DC in a region, the region is said to have availability zones.
What is Paired Region: Required for Geo-Replication.
An Azure region consists of a set of data centres deployed within a latency-defined perimeter and connected through a dedicated low-latency network. This ensures that Azure services within an Azure region offer the best possible performance and security
Region Details
https://azure.microsoft.com/en-us/global-infrastructure/geographies/
Services Availability
https://azure.microsoft.com/en-us/global-infrastructure/services/?products=all
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SLA Calculator :
https://uptime.is/
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Pricing Calculator :
https://azure.microsoft.com/en-gb/pricing/calculator/
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