I have three instance of an application in vm1 and another 3 in vm2. Each application has different context path and the URL's are below VM1 https://hostname/random1 https://hostname/random2 https://hostname/random3 VM2 https://hostname/random1 https://hostname/random2 https://hostname/random3
Is it possible to load balance them and use https://hostname/random as an external URL to reach the application.
You can use Azure Application Gateway.
configure Application Gateway routing rules so that requests to https://hostname/random are distributed across the six instances of your application on VM1 and VM2
Also, you can use Path-Based Routing rules to define your specific paths /random1, /random2, /random3) in the load balancer and route them to /random.
Dont forget to configure the health probes to check the health of each application instance
for more information, please check Azure Application GW
Another solution by using a reverse proxy like Nginx to route incoming requests to your application and load balance the traffic between instances