Update GreenLake “hpe-greenlake-platform/home”

Author: Didier-Lalli

content/greenlake/hpe-greenlake-platform/home.md

@@ -19,7 +19,47 @@ The HPE GreenLake platform, along with its marketplace and partner ecosystem, pr
 
 ## APIs and Documentation
 
-HPE GreenLake customers and partners can take advantage of our well-documented, secure, and scalable framework of APIs for HPE GreenLake found in our developer portal. Learn more about the unified HPE GreenLake experience for developers by visiting the [HPE GreenLake Developer Portal](https://developer.greenlake.hpe.com).
+HPE GreenLake customers and partners can take advantage of our well-documented, secure, and scalable framework of APIs for HPE GreenLake found in our developer portal. 
+
+The HPE GreenLake API:
+
+* **Conform to the OpenAPI 3.0 specification**. This makes them easy to learn, discoverable by code, and accessible with any programming language.
+* **Use a single endpoint**. All calls go to https://global.api.greenlake.hpe.com
+* **Use a single token** to access all APIs.
+* Are **built to be secure** and **highly available**.
+* Are **RESTful** for flexible implementation.
+
+We provide APIs for foundational, common services on the HPE GreenLake platform, along with a developer portal to support you with documentation, code, community, and more. 
+
+Here’s a summary of what you can expect to find:
+
+#### [Workspace management](https://developer.greenlake.hpe.com/docs/greenlake/services/iam/)
+
+Learn about the details of a workspace, and discover how to fully create, read, update, and delete (CRUD) on managed service provider (MSP) tenant workspaces. You can also access a full CRUD roster of users, enabling you to send invitations to join a workspace.
+
+#### Authorization
+
+Familiarize yourself with the details about a permissions role, or full CRUD on user assignments to roles.
+
+#### [Devices](https://developer.greenlake.hpe.com/docs/greenlake/services/device-management/public) and [subscriptions](https://developer.greenlake.hpe.com/docs/greenlake/services/subscription-management/public)
+
+Add and modify hardware devices in a workspace, initiate subscriptions, and assign to devices.
+
+#### [Locations](https://developer.greenlake.hpe.com/docs/greenlake/services/location-management/public)
+
+Create, read, and update physical locations used for shipping and support.
+
+#### [Audit log](https://developer.greenlake.hpe.com/docs/greenlake/services/audit-logs/public/)
+
+Read details about user actions for accountability.
+
+#### [Wellness](https://developer.greenlake.hpe.com/docs/greenlake/services/wellness/public/)
+
+Get a list of wellness events via searches and filters, organize them with tags, read event details, pull KPIs, and open support cases.
+
+Learn more about the unified HPE GreenLake experience for developers by visiting the [HPE GreenLake Developer Portal](https://developer.greenlake.hpe.com).
+
+Learn about the details of a workspace, and discover how to fully create, read, update, and delete (CRUD) on managed service provider (MSP) tenant workspaces. You can also access a full CRUD roster of users, enabling you to send invitations to join a workspace.
 
 ## Demos and resources