Minimize downtime IIS Web server from VMWare to Azure Site Recovery failover

Hi,

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First of all ,We don't have any HA Load Balancer solution. After failover VMs, I want to fail over their IIS services to the Azure Site ASAP.

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what other methods are there to ensure that all traffic gets routed to the live server if one server goes down?

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- DNS Failover

- Azure Traffic Manager

- Anything else method ?

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Specially , I am wondering your experiences of IT experts that have similar environment. What is your DR plans for web server failover scenario?

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Kind regards,