Add guidance for implementing an external standard on graph

.github/CODEOWNERS

@@ -1,3 +1,3 @@
 # These are the set of folks who should review PRs on the azureRestUpdates branch.
-* @microsoft/azure-api-stewardship-board @Azure/api-stewardship-board
-/graph/* @microsoft/graphguidelinesapprovers
+#*  @microsoft/azure-api-stewardship-board @Azure/api-stewardship-board
+/graph/ @microsoft/graphguidelinesapprovers

README.md

@@ -1,29 +1,19 @@
- # NOTICE TO READERS
-
- ## Guidance for Azure service teams
-Azure service teams should use companion documents, [Azure REST API Guidelines](./azure/Guidelines.md) and [Considerations for Service Design](./azure/ConsiderationsForServiceDesign.md), when building or modifying their services. These documents provide a refined set of guidance targeted specifically for Azure services. For more information please refer to the [README](./azure/README.md) in the Azure folder. 
-
-## Guidance for Microsoft Graph service teams
- Microsoft Graph service teams should reference the companion document, [Graph REST API Guidelines](./graph/GuidelinesGraph.md) when building or modifying their services.
+# Microsoft REST API Guidelines
+Thank you for your interest in the Microsoft REST API Guidelines. If you have landed here, you're probably interested in learning about APIs. If so, you are in the right place!
+We publish these guidelines here with the aim of fostering dialogue and learning in the API community at large. We further hope that these guidelines might encourage other organizations to create guidelines that are appropriate for them and in turn, if they're able, to publish theirs.
 
-In the process of building many of Microsoft's highest scale services, the Microsoft Graph team found the Microsoft API guidelines tremendously useful as a baseline. However, there are several areas where we need to provide more clarity on how developers should describe their APIs. The companion document, [Graph REST API Guidelines](./graph/GuidelinesGraph.md) is a set of amendments and clarifications for Microsoft Graph that act as further reading. Recognizing that two documents is a lot for a new API designer to absorb, our plan is to follow the approach Azure have taken and roll out guidelines for Microsoft Graph into a single consolidated document.
+### Guidance for Azure service teams
+Azure service teams should reference the companion documents, [Azure REST API Guidelines](./azure/Guidelines.md) and [Considerations for Service Design](./azure/ConsiderationsForServiceDesign.md), when building or modifying their services. These documents provide a refined set of guidance targeted specifically for Azure services. For more information, please refer to the [README](./azure/README.md) in the Azure folder.
 
----
-
-## Microsoft REST API Guidelines
-The [Microsoft REST API Guidelines](Guidelines.md) are Microsoft's internal company-wide REST API design guidelines.
-Teams at Microsoft typically reference this document when setting API design policy.
-They may additionally create documents specific to their team, adding further guidance or making adjustments as appropriate to their circumstances.
-
-We publish these guidelines here with the aim of fostering dialogue and learning in the API community at large.
-We further hope that these guidelines may encourage other organizations to create guidelines that are appropriate for them and in turn, if they are able, to publish theirs.
+### Guidance for Microsoft Graph service teams
+Graph service teams should reference the companion document, [Microsoft Graph REST API Guidelines](./graph/GuidelinesGraph.md) when building or modifying their services. This document and the associated pattern catalog provide a refined set of guidance targeted specifically for Microsoft Graph services.
 
 [![License: CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/)
 
 ## Code of Conduct
-This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
+This project adopts the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information, see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
 
 ## This repository
-This repository contains a collection of documents and related materials supporting the overall Microsoft REST API Guidelines initiative. To contribute to this repository, please see the [contribution guidelines][contribution-guidance].
+This repository contains a collection of documents and related materials supporting the overall Microsoft REST API Guidelines initiative. To contribute to this repository, see the [contribution guidelines][contribution-guidance].
 
 [contribution-guidance]: CONTRIBUTING.md