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In the last article, we learned about Azure reservations, and users can save a lot of money by using Azure reservations. In this article, let's take a closer look at reserved virtual machine instances (RI) in Azure. Azure retains virtual machine instances, which allows users to retain virtual machines on the Azure at a very low price. Compared to pay-as-you-go prices, the use of Azure mixed-use benefits in reserved virtual machine instances can save up to 80 percent and up to 72 percent for all virtual machines. Azure reserved virtual machine instances can be flexibly and easily swapped or cancelled according to changes in business requirements. You can also easily purchase and retain virtual machine instances through a few simple steps.

Azure retains virtual machine instances with the following benefits:

More clouds, lower costs

Using Windows and Linux virtual machines (VM) for one or three years significantly reduces costs-up to 72%-compared to pay-on-demand prices. By combining the cost savings of Azure RI with the added value of Azure's hybrid advantages, you can save up to 80% *.

Reduce total cost of ownership by combining Azure reserved instances with pay-on-demand prices to manage the cost of predictable and variable workloads. In many cases, you can further reduce costs by retaining the flexibility of instance size.

More importantly, you can now easily calculate your investment by improving your budget and forecast with an one-time advance.

Simple and easy to use

Select and purchase Azure reserved VM instances through three simple steps-specify the Azure region, virtual machine type and duration (one or three years)-and that's it.

Although Azure reserved instances require an advance commitment to computing capacity, they can also provide flexibility if your business requirements change. It is easy to exchange or cancel reserved instances at any time.

Swap Azure RI across any region and any series when the workload or application needs to change. Cancel the Azure RI at any time and return the remaining months of the retained instance to Microsoft-up to the annual limit-early termination fee.

Azure reserved instances can be assigned at the registration or subscription level so that you can manage reserved instance usage at the organizational or individual departmental level. The allocation can also be easily changed after purchase.

Instance size can be flexibly and automatically selected

Your industry ​​ services and application requirements are constantly evolving. Promising a specific VM size in advance-the price discount offered by using Azure reserved instances-may be limited.

Simplify and automate the management of Azure RI. Your Azure reservation instance is now more adaptable. Azure can automatically apply these RI to other VM sizes within the same group and region. Therefore, you will spend less time managing your RI. You can also achieve cost savings. Let Azure manage your reserved instances and spend more time on innovative projects that drive business growth.

Consistent with our commitment to make RI simpler and more flexible than any other cloud provider, this advantage applies to Windows and Linux VM.

So how to buy the RI of virtual machines?

After logging in to the Azure Portal, click Virtual Machine, and then click keep

Click to buy

It will generate a default name, which can also be modified according to the actual situation.

Choose a subscription, but since my account is only a subscription used by MSDN for development testing, I am not eligible to buy RI. As we mentioned in the previous article, only Azure customers using the following subscription types can purchase bookings:

Enterprise agreement subscription package type (MS-AZR-0017P or MS-AZR-0148P). Pay-as-you-go subscription package type (MS-AZR-003P or MS-AZR-0023P). Cloud solution provider (CSP) partners can purchase Azure bookings using the Azure Portal or partner Central.

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