Using Mathematics to Validate Network Configurations: AWS Tiros for Segmentation Checks

AWS is using its automated-reasoning tool Tiros to statically validate network segmentation across all modeled paths, rather than relying on packet-based sampling. Tiros converts Cloud WAN configurations from route tables, attachments, and policy documents into logical propositions, then checks that no path exists between segments the policy declares off limits, with analyses run as often as every hour.