docs: add high-level diagram (aquasecurity#816)

Signed-off-by: Daniel Pacak <pacak.daniel@gmail.com>

README.md

@@ -55,7 +55,7 @@ and some APIs and [Custom Resource Definitions] may change.
 The official [Documentation] provides detailed installation, configuration, troubleshooting, and quick start guides.
 
 Learn how to install the Starboard command [From the Binary Releases] and follow the [Getting Started][getting-started-cli]
-guide to generate your first vulnerability and configuration audit reports!
+guide to generate your first vulnerability and configuration audit reports.
 
 You can install the Starboard Operator with [Static YAML Manifests] and follow the [Getting Started][getting-started-operator]
 guide to see how vulnerability and configuration audit reports are generated automatically.

docs/index.md

@@ -18,6 +18,11 @@ Starboard provides:
 - [Custom Resource Definitions] and a [Go module] to work with and integrate a range of security scanners.
 - The [Octant Plugin] and the [Lens Extension] that make security reports available through familiar Kubernetes interfaces.
 
+<figure>
+  <img src="./images/starboard-overview.png" />
+  <figcaption>The high-level design diagram of Starboard toolkit.</figcaption>
+</figure>
+
 Starboard can be used:
 
 - As a [Kubernetes operator] to automatically update security reports in response to workload and other changes on a
@@ -28,10 +33,16 @@ Starboard can be used:
 
 ## What's Next?
 
-- Follow the getting started guides for [Starboard CLI](./cli/getting-started.md) and [Starboard Operator](./operator/getting-started.md).
-- Read more about the motivations and use cases on the [Starboard: The Kubernetes-Native Toolkit for Unifying Security][use-cases] blog.
+- Learn how to install the Starboard command [From the Binary Releases](./cli/installation/binary-releases.md) and
+  follow the [Getting Started](./cli/getting-started.md) guide to generate your first vulnerability and configuration
+  audit reports.
+- Install the Starboard Operator with [Static YAML Manifests](./operator/installation/kubectl.md) and follow the
+  [Getting Started](./operator/getting-started.md) guide to see how vulnerability and configuration audit reports are
+  generated automatically.
+- Read more about the motivations for the project in the [Starboard: The Kubernetes-Native Toolkit for Unifying Security]
+  blog.
 - See a detailed introduction to Starboard with demos at [KubeCon + CloudNativeCon NA 2020][kubecon-video].
-- Join our [discussions] on GitHub.
+- Join the community, and talk to us about any matter in [GitHub Discussions] or [Slack].
 
 [Custom Resource Definitions]: ./crds/index.md
 [cli]: cli/index.md
@@ -40,7 +51,8 @@ Starboard can be used:
 [Octant Plugin]: ./integrations/octant.md
 [Lens Extension]: integrations/lens.md
 [kubectl]: https://kubernetes.io/docs/reference/kubectl/
-[use-cases]: https://blog.aquasec.com/starboard-kubernetes-tools
-[discussions]: https://github.com/aquasecurity/starboard/discussions
+[Starboard: The Kubernetes-Native Toolkit for Unifying Security]: https://blog.aquasec.com/starboard-kubernetes-tools
+[GitHub Discussions]: https://github.com/aquasecurity/starboard/discussions/
+[Slack]: https://slack.aquasec.com/
 [kubecon-video]: https://www.youtube.com/watch?v=cgcwIY1HVI0
 [kube-hunter]: https://github.com/aquasecurity/kube-hunter