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You can use Azure Front Door which will give you a CDN and a WAF.
Whether you’re delivering content and files or building global apps and APIs, Azure Front Door can help you deliver higher availability, lower latency, greater scale, and more secure experiences to your users wherever they are.
or
You can use a Traffic Manager
Azure Traffic Manager is a DNS-based traffic load balancer. This service allows you to distribute traffic to your public facing applications across the global Azure regions. Traffic Manager also provides your public endpoints with high availability and quick responsiveness.
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