What is the maximum number of forwarding rules for Internal Load Balancers (ILBs)?

The maximum number of forwarding rules for Internal Load Balancers (ILBs) in Google Cloud Platform is indeed 100. This limit applies to each region in which the load balancer can be used.

Forwarding rules act as entry points to the load balancer, directing incoming traffic to appropriate backend services based on the defined configurations. Understanding this limitation is crucial for network engineers as they design scalable applications and services.

In contexts where a workload may require multiple services to be accessible internally via ILBs, recognizing this limit ensures appropriate architectural planning ahead of deployment. In situations where more forwarding rules are necessary, engineers would need to consider alternative configurations or patterns, such as using multiple load balancers across different regions or using a combination of internal and external load balancing strategies.

By knowing this maximum, professionals can design their network architecture effectively, aligning with Google Cloud's resource limitations and ensuring they do not exceed the quotas, which could lead to disruptions in service availability.