docs: update docs about prodMode. (#49745)

JeanMeche · AndrewKushnir · commit 893eef39fca2 · 2023-04-10T09:02:29.000-07:00
Following #49723, this commit updates the doc to reflect the actual message prompted in the console. PR Close #49745
diff --git a/aio/content/guide/deployment.md b/aio/content/guide/deployment.md
@@ -247,31 +247,28 @@ The `production` configuration engages the following build optimization features
 | Features                                              | Details |
 |:---                                                   |:---     |
 | [Ahead-of-Time (AOT) Compilation](guide/aot-compiler) | Pre-compiles Angular component templates.                                |
-| [Production mode](#enable-prod-mode)                  | Deploys the production environment which enables *production mode*.      |
+| [Production mode](#prod-mode)                         | Optimizes the application for the best runtime performance |
 | Bundling                                              | Concatenates your many application and library files into a few bundles. |
 | Minification                                          | Removes excess whitespace, comments, and optional tokens.                |
 | Uglification                                          | Rewrites code to use short, cryptic variable and function names.         |
 | Dead code elimination                                 | Removes unreferenced modules and much unused code.                       |
 
 See [`ng build`](cli/build) for more about CLI build options and what they do.
 
-<a id="enable-prod-mode"></a>
+<a id="prod-mode"></a>
 
-### Enable runtime production mode
+### Production mode at runtime
 
-In addition to build optimizations, Angular also has a runtime production mode.
-Angular applications run in development mode by default, as you can see by the following message on the browser console:
+When you run an application locally using `ng serve`, Angular uses the development mode configuration
+at runtime. The development mode at runtime enables extra safety checks, more detailed error messages
+and debugging utilities, such as the [expression-changed-after-checked](errors/NG0100) detection. Angular outputs
+a message in the browser console to indicate that the development mode is enabled.
 
-<code-example format="output" hideCopy language="shell">
-
-Angular is running in development mode.
-Call `enableProdMode()` to enable production mode.
+Those extra checks are helpful during the development, but they require an extra code in a bundle, which is
+undesirable in production. To ensure that there are no implications on the bundle size, the build optimizer
+removes the development-only code from the bundle when building in production mode.
 
-</code-example>
-
-*Production mode* improves application performance by disabling development-only safety checks and debugging utilities, such as the expression-changed-after-checked detection.
 Building your application with the production configuration automatically enables Angular's runtime production mode.
-
 <a id="lazy-loading"></a>
 
 ### Lazy loading
