Merge branch '6.0' into deployment-overhaul

Author: stevepiercy

docs/glossary.md

@@ -768,4 +768,10 @@ CD
 continuous deployment
 continuous delivery
     Continuous deployment or continuous delivery is a software development practice that works in conjunction with {term}`CI` to automate the infrastructure provisioning and application release process.
+
+lazy load
+lazy loading
+lazy loaded
+    Lazy loading is a strategy to identify resources as non-blocking (non-critical) and load these only when needed.
+    It's a way to shorten the length of the [critical rendering path](https://developer.mozilla.org/en-US/docs/Web/Performance/Critical_rendering_path, which translates into reduced page load times.
 ```