abu-add-kms-usage-explicit (#813)

* clarify few items in doc

docs/guides/operator-guide-aws-marketplace.md

@@ -108,10 +108,10 @@ The following table lists all resources that are created during the [deployment]
 
 | Name | Type | Description |
 |:------|:------|:-------------|
-| `KMSKey` | `AWS::KMS::Key` | The key for secret encryption (for configuration strings). |
+| `KMSKey` | `AWS::KMS::Key` | Custom KMS key used for encrypting the secrets in AWS Secrets Manager. | 
 | `SSMKeyAlias` | `AWS::KMS::Alias` | An alias that provides an easy way to access the [KMS](https://aws.amazon.com/kms/) key. |
-| `TokenSecret` | `AWS::SecretsManager::Secret` | An encrypted configuration that includes the operator key. |
-| `WorkerRole` | `AWS::IAM::Role` | The IAM role that your UID2 Operators run as. Roles provide access to configuration keys. |
+| `TokenSecret` | `AWS::SecretsManager::Secret` | A Secrets Manager secret to store the operator key. |
+| `WorkerRole` | `AWS::IAM::Role` | The IAM role that your UID2 Operators run as. The role provides access to AWS Secrets Manager to retrieve operator keys. |
 | `WorkerInstanceProfile` | `AWS::IAM::InstanceProfile` | The instance profile with Worker Role to attach to Operator EC2 instances. |
 | `SecurityGroup` | `AWS::EC2::SecurityGroup` | A security group policy that provides rules for operator instances. See also [Security Group Policy](#security-group-policy).|
 | `LaunchTemplate` | `AWS::EC2::LaunchTemplate` | A launch template with all configurations in place. You can spawn new UID2 Operator instances from it. |
@@ -136,7 +136,7 @@ To avoid passing certificates associated with your domain into the enclave, inbo
 | ----------- | --------- | -------- | ------ |
 | 80 | Inbound | HTTP | Serves all UID2 APIs, including the healthcheck endpoint `/ops/healthcheck`.<br/>When everything is up and running, the endpoint returns HTTP 200 with a response body of `OK`. For details, see [Checking UID2 Operator Status](#checking-uid2-operator-status). |
 | 9080 | Inbound | HTTP | Serves Prometheus metrics (`/metrics`). |
-| 443 | Outbound | HTTPS | Calls the UID2 Core Service; updates opt-out data and key store. |
+| 443 | Outbound | HTTPS | Calls the UID2 Core Service, AWS S3, to download files for opt-out data and key store. |
 
 ### VPC Chart
 
@@ -216,7 +216,7 @@ To create a load balancer and a target operator auto-scaling group, complete the
 2. Click **Create Load Balancer**.
 3. On the Load balancer types page, in the **Application Load Balancer** section, click **Create**.
 4. Enter the UID2 **Load balancer name**. Depending on whether or not you need to access UID2 APIs from public internet, choose the **Internet-facing** or **Internal** scheme.
-5. Select the **VPC** for your targets and at least two subnets used in your CloudFormation stack.
+5. Select the **VPC** you used while creating the CloudFormation stack, and at least two subnets.
 6. Under **Security groups**, click **Create new security group** and do the following:
     1. Enter `UID2SGALB` as its **Security group name**, as well as a relevant **Description**.
     2. Under **Inbound rules**, click **Add rule**, then select the **HTTPS** Type and an appropriate **Source** according to your requirements.
@@ -332,7 +332,7 @@ These are the default settings for the following reasons:
 
 ### Changing the Log Rotation Schedule
 
-To change the log rotation schedule, update the `etc/logrotate.d/operator-logrotate.conf` file.
+To change the log rotation schedule, update the `etc/logrotate.d/operator-logrotate.conf` file. 
 
 Follow the instructions in the logrotate documentation: see [logrotate(8) - Linux man](https://linux.die.net/man/8/logrotate) page.
 

docs/snippets/_private-operator-attest-failure.mdx

@@ -1,6 +1,6 @@
 When a Private Operator fails to attest with the Core service, one of the following actions happens:
 - HTTP 401 response. The Private Operator terminates itself immediately.
-  - Likely Causes: API key revoked or incorrect.
+  - Likely Causes: Operator key revoked or incorrect.
 - Any other non-200 response code. The Private Operator continues to function for 12 hours. If the issue is not resolved in this time frame, it terminates itself.
   - Likely Causes: Core service issues, network issues.