docs: (IAC-487) Update README.md (#260)

* Update README.md

IAC-487 - Editing README.

* Update README.md

* Update README.md

Author: supear

README.md

@@ -2,7 +2,7 @@
 
 ## Overview
 
-This project contains Terraform scripts to provision the Microsoft Azure Cloud infrastructure resources that are required to deploy SAS Viya 4 product offerings. Here is a list of resources that this project can create:
+This project helps you to automate the cluster-provisioning phase of SAS Viya deployment. It contains Terraform scripts to provision the Microsoft Azure Cloud infrastructure resources that are required to deploy SAS Viya 4 product offerings. Here is a list of resources that this project can create:
 
   >- Azure resource group(s): primary resource group and AKS resource group
   >- Virtual network, network security groups, and network security rules
@@ -15,12 +15,18 @@ This project contains Terraform scripts to provision the Microsoft Azure Cloud i
 
 [<img src="./docs/images/viya4-iac-azure-diag.png" alt="Architecture Diagram" width="750"/>](./docs/images/viya4-iac-azure-diag.png?raw=true)
 
-This project helps you to automate the cluster-provisioning phase of SAS Viya deployment. To learn about all phases and options of the
-SAS Viya deployment process, see [Getting Started with SAS Viya and Azure Kubernetes Service](https://go.documentation.sas.com/doc/en/itopscdc/v_015/itopscon/n1d7qc4nfr3s5zn103a1qy0kj4l1.htm) in _SAS Viya Operations_.
+This project addresses the first of three steps in [Steps for Getting Started in SAS Viya Operations](https://go.documentation.sas.com/doc/en/itopscdc/default/itopscon/n12fgslcw9swbsn10rva4bp0mr2w.htm) in _SAS&reg; Viya&reg; Operations_:
+
+1. Provision resources.
+1. Prepare for the deployment.
+1. Customize and deploy SAS Viya.
+
+**Note:** The scripts in this project are provided as examples. They do not provide comprehensive configuration. The second and third steps include additional configuration tasks. Some of those tasks (for example, enabling logging and specifying available IP addresses) are essential for a more secure deployment.
 
 Once the cloud resources are provisioned, use the [viya4-deployment](https://github.com/sassoftware/viya4-deployment) project to deploy 
-SAS Viya 4 in your cloud environment. For more information about SAS Viya 4 requirements and documentation for the deployment
-process, refer to the [SAS&reg; Viya&reg; 4 IT Operations Guide](https://go.documentation.sas.com/doc/en/itopscdc/default/itopswlcm/home.htm).
+SAS Viya 4 in your cloud environment. To learn about all phases and options of the SAS Viya deployment process, see
+[Getting Started with SAS Viya and Azure Kubernetes Service](https://go.documentation.sas.com/doc/en/itopscdc/default/itopscon/n1d7qc4nfr3s5zn103a1qy0kj4l1.htm) in _SAS Viya Operations_.
+
 
 ## Prerequisites
 
@@ -95,6 +101,10 @@ Create and manage the required cloud resources. Perform one of the following ste
 
 See the [Troubleshooting](./docs/Troubleshooting.md) page for information about possible issues that you might encounter.
 
+## Security
+
+Additional configuration to harden your cluster environment is supported and encouraged. For example, you can limit cluster access to specified IP addresses. You can also deploy a load balancer or application gateway to mediate data flows between SAS Viya components and the ingress controller.
+
 ## Contributing
 
 > We welcome your contributions! See [CONTRIBUTING.md](CONTRIBUTING.md) for information about how to submit contributions to this project.