Hi Ramit Sharma,
Welcome to Microsoft Q&A forum.
As I understand, you have a question on SQL Server licensing.
If it is related to SQL Server, SQL Server 2019 is offered in two main commercial editions to accommodate the unique feature, performance and price requirements of organizations and individuals:
- Enterprise Edition is ideal for applications requiring mission critical in-memory performance, security and high availability.
- Standard Edition delivers fully featured database capabilities for mid-tier applications and data marts.
The editions are offered in a straightforward, tiered model that creates greater consistency across the product editions, features and licensing. Enterprise Edition includes all the capabilities available in SQL Server 2019.
If the question is about SQL Server on Azure Virtual Machines (VMs), there are three license models for an Azure VM that's hosting SQL Server: pay-as-you-go, Azure Hybrid Benefit (AHB), and High Availability/Disaster Recovery (HA/DR). You can modify the license model of your SQL Server VM by using the Azure portal, the Azure CLI, or PowerShell.
More details: https://learn.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/licensing-model-azure-hybrid-benefit-ahb-change?view=azuresql&tabs=azure-portal
Hope this helps. Let us know if you have more queries.
Thanks