Classless Inter-Domain Routing - method for allocating IP addresses and routing internet traffic efficiently. Like having a smart addressing system that reduces waste and improves delivery.
Network administrators use CIDR notation like '10.0.0.0/16' to define IP address ranges for different subnets.
CIDR (Classless Inter-Domain Routing) is an IP addressing and routing notation/standard used across all clouds and on the public internet. It is not a standalone cloud service; instead, it is used when defining VPC/VNet/VCN networks, subnets, route tables, firewall rules, and IP allowlists in AWS, Azure, Google Cloud, and OCI.