add new aws recommendations

docs/cloud-cost-management/5-use-ccm-cost-governance/asset-governance/3-gov-overview.md

@@ -49,7 +49,7 @@ You can see a list of all recommendations offered by Harness for each Cloud prov
 
 | Cloud | Cost Correlation | First Class Region Filter Support | Recommendations | Multi-Policy | Autostopping (EC2/VM/Instance) |
 |-------|------------------|---------------------------------|------------------|--------------|--------------------------------|
-| AWS   | `aws.ec2`, `aws.ebs`, `aws.rds`, `aws.ebs-snapshot`, `aws.elastic-ip`, `aws.elb` | Yes ✅ | Yes ✅ | Yes ✅ | Yes ✅ |
+| AWS   | `aws.ec2`, `aws.ebs`, `aws.rds`, `aws.ebs-snapshot`, `aws.elastic-ip`, `aws.elb`, `cache-cluster`, `s3`, `redshift`, `redshift-snapshot` | Yes ✅ | Yes ✅ | Yes ✅ | Yes ✅ |
 | GCP   | `gcp.instance`, `gcp.disk`, `gcp.snapshot`, `gcp.sql-instance`, `gcp.image` | No ❌                             | Yes ✅               | Yes ✅         | No ❌ |
 | Azure | Every Resource in Billing Report | Yes ✅ | Yes ✅ | Yes ✅ | No ❌ |
 

docs/cloud-cost-management/5-use-ccm-cost-governance/asset-governance/AWS/AWS-recommendations.md

@@ -215,3 +215,259 @@ policies:
 
 ---
 
+### Recommendation: under-utilized-elasticcache-cluster
+**Description:** Delete underutilised cache cluster with CPU utilisation less than 5% in last 7 days.
+
+**Policy Used:**
+
+```yaml
+policies:
+  - name: under-utilized-elasticcache-cluster
+    resource: cache-cluster
+    description: |
+      Delete underutilised cache cluster with CPU utilisation less than 5% in last 7 days
+    filters:
+      - type: metrics
+        name: CPUUtilization
+        days: 7
+        period: 86400
+        value: 5
+        op: less-than
+    actions:
+      - type: delete
+        skip-snapshot: false
+```
+
+**Savings Computed:** The policy identifies a list of resources on which potential savings are calculated by summing up cost of each resource for last 30 days.
+
+**Permissions Required:** 
+- **Dry Run:** 
+    - ```elasticache:DescribeCacheClusters```
+- **Run Once:** 
+    - ```elasticache:DescribeCacheClusters```
+    - ```elasticache:DeleteCacheCluster```
+    - ```elasticache:DeleteReplicationGroup```
+
+---
+
+### Recommendation: s3-lifecycle-configuration
+
+**Description:** Configure lifecycle for s3 buckets wherever it is absent which would help to reduce storage spend
+
+**Policy Used:**
+
+```yaml
+policies:
+  - name: s3-lifecycle-configuration
+    resource: aws.s3
+    description: |
+      Configure lifecycle for s3 buckets wherever it is absent which would help to reduce storage spend
+    filters:
+      - type : value
+        key : Lifecycle
+        value : absent
+    actions:
+      - type: configure-lifecycle
+        rules:
+          - ID: harness-default-lifecycle
+            Status: Enabled
+            Filter:
+              Prefix: ''
+            Expiration:
+              ExpiredObjectDeleteMarker: True
+            AbortIncompleteMultipartUpload:
+              DaysAfterInitiation: 7
+            NoncurrentVersionExpiration:
+              NoncurrentDays: 30
+              NewerNoncurrentVersions: 6
+```
+
+**Savings Computed**: 
+To estimate the percentage cost savings from the given S3 lifecycle policies, we need to look at the specific actions and apply some reasonable assumptions. Here's a step-by-step approach:
+
+1. Abort Incomplete Multipart Uploads after 7 days:
+- Assumption: 5% of all uploads are incomplete and are not cleaned up without this policy.
+- Cost Impact: Each incomplete multipart upload that is aborted saves the storage cost of the data uploaded so far.
+
+2. Expire Noncurrent Versions after 30 days (keeping 6 versions):
+- Assumption: Each object has, on average, 10 noncurrent versions stored. Expiring noncurrent versions after 30 days, keeping only the latest 6, will delete 4 out of every 10 noncurrent versions.
+- Cost Impact: Deleting 40% of noncurrent versions reduces the total storage used by these versions.
+
+**Example Calculation**
+
+Let's assume the following for a single S3 bucket:
+
+**Total Storage Used**: 1 TB (1,024 GB) in the S3 Standard storage class.
+
+**Storage Distribution:**
+- Current versions: 50% (512 GB)
+- Noncurrent versions: 40% (410 GB)
+- Incomplete multipart uploads: 10% (102 GB)
+
+**Without Lifecycle Policy**
+
+**Cost for S3 Standard:** $0.023 per GB per month
+
+
+<DocImage path={require('../static/cal1.png')} width="50%" height="50%" title="Click to view full size image" />
+
+
+**With Lifecycle Policy**
+
+**Abort Incomplete Multipart Uploads:**
+- Removes 5% of total storage (5% of 1,024 GB = 51 GB)
+- New incomplete multipart uploads storage: 51 GB (102 - 51)
+
+**Expire Noncurrent Versions:**
+- Reduces noncurrent versions by 40% (40% of 410 GB = 164 GB)
+- New noncurrent versions storage: 246 GB (410 - 164)
+
+<DocImage path={require('../static/cal2.png')} width="50%" height="50%" title="Click to view full size image" />
+
+
+**Total Savings**
+ <DocImage path={require('../static/savings1.png')} width="40%" height="40%" title="Click to view full size image" />
+
+References: 
+- [AWS S3 Lifecycle Policies](https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lifecycle-mgmt.html)
+- [AWS S3 Pricing](https://aws.amazon.com/s3/pricing/)
+- [Managing S3 Costs](https://aws.amazon.com/blogs/storage/optimizing-costs-with-amazon-s3-lifecycle-configurations/)
+
+**Permissions Required:**
+- **Dry Run:** 
+    - ```s3:GetLifecycleConfiguration```
+- **Run Once:** 
+    - ```s3:GetLifecycleConfiguration```
+    - ```s3:PutLifecycleConfiguration```
+
+---
+
+### Recommendation: s3-intelligent-tiering-configuration
+
+**Description:** Configure intelligent tiering for s3 buckets wherever it is disabled which would help to reduce storage spend.
+
+**Policy Used:**
+
+```yaml
+policies:
+  - name: s3-intelligent-tiering-configuration
+    resource: aws.s3
+    description: |
+      Configure intelligent tiering for s3 buckets wherever it is disabled which would help to reduce storage spend.
+    filters:
+      - not:
+          - type: intelligent-tiering
+            attrs:
+              - Status: Enabled
+    actions:
+      - type: set-intelligent-tiering
+        Id: harness-default
+        IntelligentTieringConfiguration:
+          Id: harness-default
+          Status: Enabled
+          Tierings:
+            - Days: 90
+              AccessTier: ARCHIVE_ACCESS
+            - Days: 180
+              AccessTier: DEEP_ARCHIVE_ACCESS
+```
+
+**Savings Computed:** 
+- **Frequent Access Tier:** This tier is equivalent in cost to the standard S3 storage, so no savings here.
+- **Infrequent Access Tier:** Data not accessed for 30 days moves here, saving approximately 45% compared to standard S3 storage​.
+- **Archive Instant Access Tier:** Data not accessed for 90 days moves here, with savings up to 68% compared to standard storage​.
+- **Archive Access Tier:** If configured, data not accessed for 90 days can move here, offering around 71% savings​.
+- **Deep Archive Access Tier:** Data not accessed for 180 days can be moved to this tier, providing up to 95% savings.
+
+**Example Calculation**
+
+Assume you have 1 TB of data stored in S3 standard storage:
+
+ <DocImage path={require('../static/example1.png')} width="60%" height="60%" title="Click to view full size image" />
+
+**Example Scenario**
+
+If 20% of your data transitions to the Infrequent Access tier after 30 days, 20% moves to Archive Access after 90 days, and 10% moves to Deep Archive Access after 180 days, your costs might look like this:
+
+ <DocImage path={require('../static/example2.png')} width="50%" height="50%" title="Click to view full size image" />
+
+ This results in a cost savings of approximately 32.76% compared to keeping all data in standard S3 storage ($23.00 per month vs. $15.463 per month).
+
+ References: 
+ - [AWS intelligent tiering](https://aws.amazon.com/s3/storage-classes/intelligent-tiering/)
+ - [AWS S3 Pricing](https://aws.amazon.com/s3/pricing/)
+
+**Permissions Required:**
+- **Dry Run:** 
+    - ```s3:GetBucketIntelligentTieringConfiguration```
+- **Run Once:** 
+    - ```s3:GetBucketIntelligentTieringConfiguration```
+    - ```s3:PutIntelligentTieringConfiguration```
+
+---
+
+### Recommendation: delete-underutilized-redshift-cluster
+
+**Description:** Delete redshift cluster where CPU Utilization is less than 5% for last 7 days
+
+**Policy Used:**
+
+```yaml
+policies:
+  - name: delete-underutilized-redshift-cluster
+    resource: redshift
+    description: |
+      Delete redshift cluster where CPU Utilization is less than 5% for last 7 days
+    filters:
+      - type: metrics
+        name: CPUUtilization
+        days: 7
+        period: 86400
+        value: 5
+        op: less-than
+    actions:
+      - delete
+```
+
+**Savings Computed:**  The policy identifies a list of resources on which potential savings are calculated by summing up cost of each resource for last 30 days.
+
+**Permissions Required:**
+- **Dry Run:** 
+    - ```redshift:DescribeClusters```
+- **Run Once:** 
+    - ```redshift:DescribeClusters```
+    - ```redshift:DeleteCluster```
+
+---
+
+### Recommendation: delete-redshift-old-manual-snapshots
+
+**Description:** Delete all redshift snapshot older than 35 days with lifetime retention period
+
+**Policy Used:**
+
+```yaml
+
+policies:
+  - name: delete-redshift-old-manual-snapshots
+    resource: redshift-snapshot
+    description: |
+      Delete all redshift snapshot older than 35 days with lifetime retention period
+    filters:
+      - "ManualSnapshotRetentionPeriod": -1
+      - type: age
+        days: 35
+        op: gt
+    actions:
+      - delete
+```
+**Savings Computed:**  The policy identifies a list of resources on which potential savings are calculated by summing up cost of each resource for last 30 days.
+
+**Permissions Required:**
+- **Dry Run:** 
+    - ```redshift:DescribeClusterSnapshots```
+- **Run Once:** 
+    - ```redshift:DeleteClusterSnapshot```
+    - ```redshift:DescribeClusterSnapshots```
+
+---