Merge pull request open-guides#114 from mkulke/ecs

Added ELB/ALB, alternatives to ECS section

README.md

@@ -982,11 +982,17 @@ ECS
 	-	Doesn’t support cross-region replication of images.
 		-	If you want fast fleet-wide pulls of large images, you’ll need to push your image into a region-local registry.
 	-	Doesn’t support custom domains / certificates.
+-	A container's health is monitored via [CLB](#clb) or [ALB](#alb). Those can also be used to address a containerized service. When using an ALB you do not need to handle port contention (i.e. services exposing the same port on the same host) since an ALB’s target groups can be associated with ECS-based services directly.
 
 ### ECS Tips
 
 -	[This blog from Convox](https://convox.com/blog/ecs-challenges/) (and [commentary](https://news.ycombinator.com/item?id=11598058)) lists a number of common challenges with ECS as of early 2016.
 
+### ECS Alternatives and Lock-in
+
+-	[Kubernetes](https://kubernetes.io): Extensive container platform. Available as a hosted solution on Google Cloud (https://cloud.google.com/container-engine/) and AWS (https://tectonic.com/).
+-	[Nomad](https://www.nomadproject.io/): Orchestrator/Scheduler, tightly integrated in the Hashicorp stack (Consul, Vault, etc).
+
 🚧 [*Please help expand this incomplete section.*](CONTRIBUTING.md)
 
 Lambda