Hi
what are the SQL requirements from the vendor?
You could use the Azure Pricing Calculator to get an estimate of what you need. This will also provide estimates of licensing costs for both OS and SQL (assuming you are not using Hybrid Benefit). You can also see cost savings you will gain from using Reserved Instances.
https://azure.microsoft.com/en-us/pricing/calculator/
Alternatively, if you are already running this system on on-premises infrastructure, you could do an Azure Migrate assessment which will ananlyse the workloads and provide estimates of what compute you require.
https://learn.microsoft.com/en-us/azure/migrate/migrate-services-overview
Hope this helps,
Thanks
Michael Durkan
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