Merge pull request #3610 from hhunter-ms/issue_1550

[WIP] Update SDK index page

daprdocs/content/en/developing-applications/sdks/_index.md

@@ -11,34 +11,25 @@ The Dapr SDKs are the easiest way for you to get Dapr into your application. Cho
 
 ## SDK packages
 
-- **Client SDK**: The Dapr client allows you to invoke Dapr building block APIs and perform actions such as:
-   - [Invoke]({{< ref service-invocation >}}) methods on other services
-   - Store and get [state]({{< ref state-management >}})
-   - [Publish and subscribe]({{< ref pubsub >}}) to message topics
-   - Interact with external resources through input and output [bindings]({{< ref bindings >}})
-   - Get [secrets]({{< ref secrets >}}) from secret stores
-   - Interact with [virtual actors]({{< ref actors >}})
-- **Server extensions**: The Dapr service extensions allow you to create services that can:
-   - Be [invoked]({{< ref service-invocation >}}) by other services
-   - [Subscribe]({{< ref pubsub >}}) to topics
-- **Actor SDK**: The Dapr Actor SDK allows you to build virtual actors with:
-   - Methods that can be [invoked]({{< ref "howto-actors.md#actor-method-invocation" >}}) by other services
-   - [State]({{< ref "howto-actors.md#actor-state-management" >}}) that can be stored and retrieved
-   - [Timers]({{< ref "howto-actors.md#actor-timers" >}}) with callbacks
-   - Persistent [reminders]({{< ref "howto-actors.md#actor-reminders" >}})
+Select your [preferred language below]({{< ref "#sdk-languages" >}}) to learn more about client, server, actor, and workflow packages. 
+
+- **Client**: The Dapr client allows you to invoke Dapr building block APIs and perform each building block's actions
+- **Server extensions**: The Dapr service extensions allow you to create services that can be invoked by other services and subscribe to topics
+- **Actor**: The Dapr Actor SDK allows you to build virtual actors with methods, state, timers, and persistent reminders
+- **Workflow**: Dapr Workflow makes it easy for you to write long running business logic and integrations in a reliable way
 
 ## SDK languages
 
-| Language | Status | Client SDK | Server extensions | Actor SDK |
-|----------|:------|:----------:|:-----------:|:---------:|
-| [.NET]({{< ref dotnet >}}) | Stable | ✔ |  [ASP.NET Core](https://github.com/dapr/dotnet-sdk/tree/master/examples/AspNetCore) | ✔ |
-| [Python]({{< ref python >}}) | Stable | ✔ | [gRPC]({{< ref python-grpc.md >}}) <br />[FastAPI]({{< ref python-fastapi.md >}})<br />[Flask]({{< ref python-flask.md >}})| ✔ |
-| [Java]({{< ref java >}}) | Stable | ✔ | Spring Boot | ✔ |
-| [Go]({{< ref go >}}) | Stable | ✔ | ✔ | ✔ |
-| [PHP]({{< ref php >}}) | Stable | ✔ | ✔ | ✔ |
-| [Javascript]({{< ref js >}}) | Stable| ✔ | | ✔ |
-| [C++](https://github.com/dapr/cpp-sdk) | In development | ✔ | |
-| [Rust](https://github.com/dapr/rust-sdk) | In development | ✔ | |  |
+| Language | Status | Client | Server extensions | Actor | Workflow |
+|----------|:------|:----------:|:-----------:|:---------:|:---------:|
+| [.NET]({{< ref dotnet >}}) | Stable | ✔ |  [ASP.NET Core](https://github.com/dapr/dotnet-sdk/tree/master/examples/AspNetCore) | ✔ | ✔ |
+| [Python]({{< ref python >}}) | Stable | ✔ | [gRPC]({{< ref python-grpc.md >}}) <br />[FastAPI]({{< ref python-fastapi.md >}})<br />[Flask]({{< ref python-flask.md >}})| ✔ | ✔ |
+| [Java]({{< ref java >}}) | Stable | ✔ | Spring Boot | ✔ | |
+| [Go]({{< ref go >}}) | Stable | ✔ | ✔ | ✔ | |
+| [PHP]({{< ref php >}}) | Stable | ✔ | ✔ | ✔ | |
+| [Javascript]({{< ref js >}}) | Stable| ✔ | | ✔ | |
+| [C++](https://github.com/dapr/cpp-sdk) | In development | ✔ | | |
+| [Rust](https://github.com/dapr/rust-sdk) | In development | ✔ | | | |
 
 ## Further reading