You&#x27;ll want to read the whole pitch about Linkerd [1], which the article seems to assume the reader has read. In short, it&#x27;s a sidecar proxy that performs all the functions needed to glue apps together. This allows apps to be simpler; they can implement a minimal interface and rely on simple protocols such as HTTP, with no knowledge of how to reach their remote partners. Linkerd implements a bunch of techniques such as health checks, load balancing and circuit breakers.<p>[1] <a href="https:&#x2F;&#x2F;linkerd.io" rel="nofollow">https:&#x2F;&#x2F;linkerd.io</a>