Consul - great Service Discovery tool
Great introduction from Armon Dadgar (Hashicorp) to Consul to simplify some major pain points for SOA / Service Oriented deployments of arbitrary sizes.
Consul: Service Oriented at Scale
dotScale 2014 - Mitchell Hashimoto - Building Robust Systems With Consul
Highly Available Service Discovery with Consul:
Also another talk from Evan Ochs, DevOps Engineering Manager at Rackspace
(you have to be registered to watch the video)