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6. Describe Azure pricing, SLAs, and lifecylces (10-15%) - Coggle Diagram
6. Describe Azure pricing, SLAs, and lifecylces (10-15%)
6.1 Describe methods for planning and managing costs
Resource Types-
Consider how resources are going to use the metrics the resource charges for.
Locations-
Costs for azure services differ by region.
Ingress and Egress Traffic-
You are not charged for network traffic into an Azure datacenter, but you are charged for network traffic out of a datacenter.
Azure Instance-
Committing to resources usage in advance and taking advantage of reserved instances, you no longer have to pay fess associated with pay-as-you-go pricing.
Reserved Capacity-
Allows to purchase 1-3 year contract based then billed at reduced amount. Used for Azure SQL related services.
Hybrid use benefit-
Using your own license on windows server or SQL Server on VM's can save more than 40%.
Spot Pricing-
Take advantage of unused servers capacity to run workloads that only require the use of a computer for temporary timeframe.
6.1 Describe methods for planning and managing costs
Pricing Calculator-
Helps you get an estimate of expenses based on the products you intend on using.
Total Cost of Ownership (TCO) Calculator-
Used to estimate how much one can save when migrating on-premise applications to Azure.
Azure Cost Management-
A tool to help analyze costs at a granular level. Allows one to create budgets, set configuration alerts and analyze costs in detail.
6.2 Describe Azure service level agreements (SLAs) and services lifecycles
Azure service level agreement (SLA)-
SLAs establish specific targets for availability, and they also define what the service provider will do when those targets aren’t met.
SLAs
are expressed as a percentage and are almost always 99 percent or higher. The highest level of availability expressed in an SLA is 99.999 percent.
Availability Zone-
A VM using Premium storage for all disks has an SLA of 99.9 percent. If you deploy two or more VMs into the same availability set, that SLA increases to 99.95 percent. If you deploy those two or more instances across two or more availability zones within the same Azure region, then the SLA moves to 99.99 percent.
Interpret SLA's
- When calculating the SLA for an application using multiple Azure services, you must calculate a composite SLA based on the services you’re using.
The SLA for App Service is 99.95 percent, and the SLA for a single VM running Premium storage is 99.9 percent. Therefore, your overall SLA for your application is 99.95 percent x 99.9 percent, or 99.85 percent. By deploying two VMs into two availability zones in the same region, you can obtain a 99.99 percent SLA for your VMs, and that increases your overall SLA to 99.94 percent.
Service lifecycle in Azure-
Microsoft will often offer new services and features to customers as preview offerings.
Public Preview -
Services and features that are in preview do not offer an SLA, and they are not meant to be used in production applications. Preview features are also usually not offered in all Azure regions.
Availability-
Preview services and features are sometimes first offered as a private preview. In private preview, the service or feature is made available to a small set of customers for testing.
Once a preview service or feature reaches a quality and availability bar suitable to the engineering team, they will declare general availability or GA. At this point, the service or feature is fully supported and it falls under the SLA Microsoft provides..