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+## AIOps L2 Construct
+
+AIOps is an AWS service that helps customers troubleshoot operational issues by automating information gathering, analyzing observability data,
+and providing tailored recommendations.
+The service uses generative AI to create investigation notebooks that analyze operational issues and provide actionable recommendations.
+
+The AIOps L2 construct simplifies the creation of multiple resources required for AIOPs construct.
+It exposes functions for creating features with minimum code.
+It will help create required IAM Role, KMS Key, Resource Policy underneath, with customer only passing the content if needed.
+AIOps L1 construct only have one AIOps resources "InvestigationGroup" created, and all associated resources to grant permission and have supported configuration.
+
+### A quick comparison between L1 and L2 AIOps constructs
+
+1. **Security Defaults**:
+   - Automatic encryption configuration for KMS keys, L2 will help setup the key policy statement if customer specified their own key.
+   - Proper IAM role and investigation policy setup, including policy statement
+
+2. **Operational Excellence**:
+   - Quick and easy creation of constructs
+      - Investigation Group role creation, resource based policy attachment, encryption key setup are simplified
+   - Helper methods for better user experience
+      - addCrossAccountConfiguration: Add additional cross account configuration
+      - addChatbotNotification: add a new chatbot notification arn to send investigation group resources updates to.
+      - addToResourcePolicy: Add a new policy statement to resource policy
+   - Validation and user-friendly error handling
+      - Retention days validation (7 - 90 days)
+      - cross-account configuration list size limit (max 25), and role arn format validation
+      - Chat configuration arn format
+   - Reducing the learning curve for new users, and reducing development time and potential errors
+   - Enforcing AWS best practices automatically
+
+### Investigation Group
+
+----
+
+An Investigation Group serves as a container for organizing customer investigations, with an associated IAM role that defines AIOps backend service permissions.
+Investigation belongs to one investigation group, which customers can use to track progress of an incident.
+Investigation event refers to each telemetry that customer add to investigation.
+Both investigation and investigation event are called as investigation group related resources.
+The backend services assume this group role to perform AI analysis on customer data and generate hypotheses, functioning as a supportive operator for customers.
+
+#### Create Investigation Group
+
+To create investigation group, it takes those parameters
+
+#### Required Parameters
+
+* **name** prop: A unique investigation group name  
+
+#### Optional Parameters
+
+* **role** prop: ARN of an existing role for the Investigation Group.
+If not specified, AIOps will create a default role with name `AIOpsAssistantRole`,
+and attach managed policy `AIOpsAssistantPolicy` to it, and add trust relationship from AIOps SPN.
+
+* **encryptionKey** prop: This is kms key to encrypt customer data during analysis. If not specified, AIOps will use AWS-managed key to encrypt.
+
+* **retentionInDays** prop: Retention period for all resources created under investigation group container. Min: 7 days, Max: 90 days (Default)
+
+* **chatbotNotificationChannels** prop: Array of Chatbot notification channels arns.
+AIOps would send investigation group related resources updates to those channels.
+
+* **isCloudTrailEventHistoryEnabled** prop: Flag to enable CloudTrail event history.  
+
+* **crossAccountConfigurations** prop: List of source account role ARNs for cross-account configurations.
+AIOps offer cross-account analysis, that AIOps choose one account as monitor account and others as source accounts.
+Monitor account would be able to create AIOps resources (Investigation Group and related resources),
+while source accounts grant monitor account permission to fetch data from them via source account role.
+Thus AIOps will do analysis on monitor account on all data fetched from monitor account and source accounts.
+Max of 25 cross account configuration are supported.
+
+Example
+
+```typescript
+const group = new InvestigationGroup(this, 'MyInvestigationGroup', {
+   name: 'MyGroup',
+   role?: IRole
+   chatbotNotificationChannels?: [
+      SNSTopicArn
+   ],
+   encryptionKey?: Ikey
+   isCloudTrailEventHistoryEnabled?: boolean,
+   retentionInDays?: Duration,
+   removalPolicy?: RemovalPolicy.DESTROY
+});
+```
+
+#### Methods
+
+##### To add a cross account configuration
+
+```typescript
+const group = new InvestigationGroup(this, 'MyInvestigationGroup', {
+   name: 'MyGroup'
+});
+
+group.addCrossAccountConfiguration({
+  sourceRoleArn: Arn
+});
+```
+
+##### To add a chatbot notification channel
+
+```typescript
+const group = new InvestigationGroup(this, 'MyInvestigationGroup', {
+   name: 'MyGroup'
+});
+
+group.addChatbotNotification({
+  snsTopicArn: Arn
+});
+```
+
+##### To add a resource policy
+
+```typescript
+const group = new InvestigationGroup(this, 'MyInvestigationGroup', {
+   name: 'MyGroup'
+});
+
+const policy = new PolicyStatement({
+          actions: ['aiops:CreateInvestigation', 'aiops:CreateInvestigationEvent'],
+          principals: [new ServicePrincipal('aiops.alarms.cloudwatch.amazonaws.com')],
+          resources: ['*'],
+          conditions: {
+            StringEquals: {
+              'aws:SourceAccount': ['<accountId>'],
+            },
+          },
+        });
+group.addToResourcePolicy(policy);
+```