Do health checks work within a VPC? My understanding was they don&#x27;t, so this only works for externally facing services.<p>I agree Haproxy is solid, but ELBs are wonderful for internal microservices.<p>If you do decide to use Haproxy for microservices internally, I highly recommend Synapse from AirBnB: <a href="https:&#x2F;&#x2F;github.com&#x2F;airbnb&#x2F;synapse" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;airbnb&#x2F;synapse</a>