change filename

Author: mikehoffms

microsoft-edge/extensions-chromium/developer-guide/native-client.md

@@ -0,0 +1,50 @@
+---
+title: Run compiled code in your extension
+description: How to run compiled code in your extension.
+author: MSEdgeTeam
+ms.author: msedgedevrel
+ms.topic: conceptual
+ms.service: microsoft-edge
+ms.subservice: extensions
+ms.date: 02/06/2025
+---
+# Run compiled code in your extension
+
+<!-- todo: improve description: yaml field by summarizing article/ key words -->
+
+You can run compiled code in an extension at near-native speed.
+
+<!-- todo:
+With this new title, it would nice to add a generic intro about running compiled code in an extension.
+Why someone would want to do it? 
+What are the benefits.
+tell readers to use WebAssembly immediately, only keeping the NaCl deprecation notice for a sub-section of the article.
+-->
+
+
+<!-- ====================================================================== -->
+## Native Client (NaCl) (deprecated)
+
+Native Client (NaCl) was a sandbox for running compiled C and C++ code in the browser efficiently and securely, independent of the user's operating system.
+
+To enhance web security and performance, NaCl is deprecated for Microsoft Edge, along with other browsers.   
+<!-- todo:
+which other browsers?
+link to deprecation notes from these other browsers
+-->
+
+<!-- todo: hard or soft deprection?  ie, will it still work, but discouraged?  or won't work now?  dates? -->
+
+To run compiled code in your extension, we recommend using WebAssembly instead. WebAssembly, also known as Wasm, is a low-level assembly-like language which many other languages, such as C, C++, or Rust, can compile to, and which can run at near native-speed in web browsers.
+
+See also:
+* [WebAssembly](https://developer.mozilla.org/docs/WebAssembly) at MDN.
+* [webassembly.org](https://webassembly.org/)
+
+
+<!-- ====================================================================== -->
+## See also
+
+* [WebAssembly (Wasm)](https://webassembly.org)
+* [WebAssembly Migration Guide](https://developer.chrome.com/docs/native-client/migration)
+* [Manifest - Nacl Modules](https://developer.chrome.com/docs/extensions/mv2/manifest/nacl-modules)

microsoft-edge/extensions-chromium/developer-guide/run-compiled-code.md

@@ -1067,8 +1067,8 @@
             - name: Native messaging
               href: extensions-chromium/developer-guide/native-messaging.md
 
-            - name: Native Client (NaCl)
-              href: extensions-chromium/developer-guide/native-client.md
+            - name: Run compiled code in your extension
+              href: extensions-chromium/developer-guide/run-compiled-code.md
 
             - name: Defining match patterns for an extension to access file URLs
               href: extensions-chromium/developer-guide/match-patterns.md

microsoft-edge/toc.yml

@@ -5,7 +5,7 @@ author: MSEdgeTeam
 ms.author: msedgedevrel
 ms.topic: conceptual
 ms.service: microsoft-edge
-ms.date: 06/21/2024
+ms.date: 02/06/2025
 ---
 # Site compatibility-impacting changes coming to Microsoft Edge
 
@@ -21,6 +21,18 @@ For information about upcoming Chromium project web platform changes, see [Chrom
 Check this article often as the Microsoft Edge team updates this article as thinking evolves, timelines solidify, and new changes are announced.
 
 
+<!-- ====================================================================== -->
+## Deprecation of Native Client (NaCl)
+
+To enhance web security and performance, NaCl is deprecated for Microsoft Edge, along with other browsers.   
+
+Native Client (NaCl) was a sandbox for running compiled C and C++ code in the browser efficiently and securely, independent of the user's operating system.
+
+The vibrant ecosystem around WebAssembly (Wasm) makes it a better fit for new and existing high-performance web apps. 
+
+See [Native Client (NaCl) (deprecated)](../extensions-chromium/developer-guide/run-compiled-code.md#native-client-nacl-deprecated) in _Run compiled code in your extension_.
+
+
 <!-- ====================================================================== -->
 ## Differences from the Chromium schedule, and high-impact changes