nal_state_transfer>RESTful</a> architectures are popular with API providers, and <a href=https://en.wikipedia.org/wiki/Service-oriented_architecture>service oriented architectures</a> are often required where there are lots of highly transactional workflows.</p>
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<h3 id=why-xhr-instead-of-fetch><a href=#why-xhr-instead-of-fetch>Why XHR instead of fetch</a></h3>
<p><a href=https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API><code>fetch()</code></a> is a newer Web API for fetching resources from se