Here are few recommendations to save money on azure:

• Reduce costs by eliminating unprovisioned Azure ExpressRoute circuits.
• Buy reserved instances to save money over pay-as-you-go.
• Right-size or shutdown underutilized virtual machines.
• Use Reserved Instance.Choose low-cost locations and regions.
• Right-size underutilized virtual machines.
• Deallocate virtual machines in off hours.
• Delete unused virtual machines.
• Migrate to PaaS or SaaS services.
• Use right size VMs.
• Azure Hybrid Benefit for Windows Server and SQL Server
• Use Dev/Test subscription offers
• Bring your own SQL Server license
• Use SQL Server Developer Edition for non-production use