Consul is a tool for service discovery and configuration. Consul is distributed,
highly available, and extremely scalable.

Consul provides several key features:
- Service Discovery - Consul makes it simple for services to register
themselves and to discover other services via a DNS or HTTP interface.
External services such as SaaS providers can be registered as well.
- Health Checking - Health Checking enables Consul to quickly alert operators
about any issues in a cluster. The integration with service discovery
prevents routing traffic to unhealthy hosts and enables service level circuit
breakers.
- Key/Value Storage - A flexible key/value store enables storing dynamic
configuration, feature flagging, coordination, leader election and more. The
simple HTTP API makes it easy to use anywhere.
- Multi-Datacenter - Consul is built to be datacenter aware, and can support
any number of regions without complex configuration.
- Service Segmentation - Consul Connect enables secure service-to-service
communication with automatic TLS encryption and identity-based
authorization.