Sooch AWS Region Latency Pinger - network latency measurement CLI

Sooch AWS Region Latency Pinger is a small command-line container that answers a practical question: which AWS Regions are closest to this workload, right now? Run it from anywhere - a laptop, a CI runner, an ECS or EKS task, or an on-premises host - and it measures real network latency from that environment to public AWS service endpoints in each Region, then prints a report sorted fastest-first.

The tool measures TCP + TLS connection time to public AWS endpoints (EC2 or DynamoDB, selectable), takes multiple samples per Region, and reports the median to smooth out jitter. Probes run concurrently, so a full sweep across all commercial Regions completes in seconds. Output is a human-readable table or JSON (--json) for scripting and automation. Useful for choosing a Region for a new deployment, validating latency assumptions before a migration, comparing connectivity from different offices or networks, and troubleshooting slow cross-Region paths.

Built for zero-trust environments: the container requires no AWS credentials, no IAM permissions, and no configuration; it makes no calls to any endpoint other than public AWS service endpoints, collects no data, writes nothing to disk, and contains no telemetry. It ships as a minimal distroless image that runs as a non-root user. Typical usage: docker run --rm --regions us-east-1,eu-west-1,ap-south-1 or with no arguments to sweep the built-in list of commercial AWS Regions. Options include --count (samples per Region), --timeout, --service ec2|dynamodb, --workers, and --json.