diff --git a/README.md b/README.md
index 7d4a8c9b50..d0acd79699 100644
--- a/README.md
+++ b/README.md
@@ -426,6 +426,7 @@ In case the setup does not work as intended follow the trace of events:
 | <a name="input_job_queue_retention_in_seconds"></a> [job\_queue\_retention\_in\_seconds](#input\_job\_queue\_retention\_in\_seconds) | The number of seconds the job is held in the queue before it is purged | `number` | `86400` | no |
 | <a name="input_key_name"></a> [key\_name](#input\_key\_name) | Key pair name | `string` | `null` | no |
 | <a name="input_kms_key_arn"></a> [kms\_key\_arn](#input\_kms\_key\_arn) | Optional CMK Key ARN to be used for Parameter Store. This key must be in the current account. | `string` | `null` | no |
+| <a name="input_lambda_architecture"></a> [lambda\_architecture](#input\_lambda\_architecture) | AWS Lambda architecture. Lambda functions using Graviton processors ('arm64') tend to have better price/performance than 'x86\_64' functions. | `string` | `"x86_64"` | no |
 | <a name="input_lambda_principals"></a> [lambda\_principals](#input\_lambda\_principals) | (Optional) add extra principals to the role created for execution of the lambda, e.g. for local testing. | <pre>list(object({<br>    type        = string<br>    identifiers = list(string)<br>  }))</pre> | `[]` | no |
 | <a name="input_lambda_runtime"></a> [lambda\_runtime](#input\_lambda\_runtime) | AWS Lambda runtime. | `string` | `"nodejs16.x"` | no |
 | <a name="input_lambda_s3_bucket"></a> [lambda\_s3\_bucket](#input\_lambda\_s3\_bucket) | S3 bucket from which to specify lambda functions. This is an alternative to providing local files directly. | `any` | `null` | no |
diff --git a/modules/runner-binaries-syncer/README.md b/modules/runner-binaries-syncer/README.md
index 546d98b3d4..848d697daf 100644
--- a/modules/runner-binaries-syncer/README.md
+++ b/modules/runner-binaries-syncer/README.md
@@ -84,6 +84,7 @@ No modules.
 | <a name="input_aws_region"></a> [aws\_region](#input\_aws\_region) | AWS region. | `string` | n/a | yes |
 | <a name="input_distribution_bucket_name"></a> [distribution\_bucket\_name](#input\_distribution\_bucket\_name) | Bucket for storing the action runner distribution. | `string` | n/a | yes |
 | <a name="input_environment"></a> [environment](#input\_environment) | A name that identifies the environment, used as prefix and for tagging. | `string` | `null` | no |
+| <a name="input_lambda_architecture"></a> [lambda\_architecture](#input\_lambda\_architecture) | AWS Lambda architecture. Lambda functions using Graviton processors ('arm64') tend to have better price/performance than 'x86\_64' functions. | `string` | `"x86_64"` | no |
 | <a name="input_lambda_principals"></a> [lambda\_principals](#input\_lambda\_principals) | (Optional) add extra principals to the role created for execution of the lambda, e.g. for local testing. | <pre>list(object({<br>    type        = string<br>    identifiers = list(string)<br>  }))</pre> | `[]` | no |
 | <a name="input_lambda_runtime"></a> [lambda\_runtime](#input\_lambda\_runtime) | AWS Lambda runtime. | `string` | `"nodejs16.x"` | no |
 | <a name="input_lambda_s3_bucket"></a> [lambda\_s3\_bucket](#input\_lambda\_s3\_bucket) | S3 bucket from which to specify lambda functions. This is an alternative to providing local files directly. | `any` | `null` | no |
diff --git a/modules/runners/README.md b/modules/runners/README.md
index 3f525de4c0..719fbbee1c 100644
--- a/modules/runners/README.md
+++ b/modules/runners/README.md
@@ -143,6 +143,7 @@ yarn run dist
 | <a name="input_instance_types"></a> [instance\_types](#input\_instance\_types) | List of instance types for the action runner. Defaults are based on runner\_os (amzn2 for linux and Windows Server Core for win). | `list(string)` | `null` | no |
 | <a name="input_key_name"></a> [key\_name](#input\_key\_name) | Key pair name | `string` | `null` | no |
 | <a name="input_kms_key_arn"></a> [kms\_key\_arn](#input\_kms\_key\_arn) | Optional CMK Key ARN to be used for Parameter Store. | `string` | `null` | no |
+| <a name="input_lambda_architecture"></a> [lambda\_architecture](#input\_lambda\_architecture) | AWS Lambda architecture. Lambda functions using Graviton processors ('arm64') tend to have better price/performance than 'x86\_64' functions. | `string` | `"x86_64"` | no |
 | <a name="input_lambda_runtime"></a> [lambda\_runtime](#input\_lambda\_runtime) | AWS Lambda runtime. | `string` | `"nodejs16.x"` | no |
 | <a name="input_lambda_s3_bucket"></a> [lambda\_s3\_bucket](#input\_lambda\_s3\_bucket) | S3 bucket from which to specify lambda functions. This is an alternative to providing local files directly. | `any` | `null` | no |
 | <a name="input_lambda_security_group_ids"></a> [lambda\_security\_group\_ids](#input\_lambda\_security\_group\_ids) | List of security group IDs associated with the Lambda function. | `list(string)` | `[]` | no |
diff --git a/modules/setup-iam-permissions/README.md b/modules/setup-iam-permissions/README.md
index 3ed8213706..78dc93b318 100644
--- a/modules/setup-iam-permissions/README.md
+++ b/modules/setup-iam-permissions/README.md
@@ -71,8 +71,9 @@ No modules.
 |------|-------------|------|---------|:--------:|
 | <a name="input_account_id"></a> [account\_id](#input\_account\_id) | The module allows to switch to the created role from the provided account id. | `string` | n/a | yes |
 | <a name="input_aws_partition"></a> [aws\_partition](#input\_aws\_partition) | (optional) partition in the arn namespace if not aws | `string` | `"aws"` | no |
-| <a name="input_environment"></a> [environment](#input\_environment) | A name that identifies the environment, used as prefix and for tagging. | `string` | n/a | yes |
+| <a name="input_environment"></a> [environment](#input\_environment) | A name that identifies the environment, used as prefix and for tagging. | `string` | `null` | no |
 | <a name="input_namespaces"></a> [namespaces](#input\_namespaces) | The role will be only allowed to create roles, policies and instance profiles in the given namespace / path. All policies in the boundaries namespace cannot be modified by this role. | <pre>object({<br>    boundary_namespace         = string<br>    role_namespace             = string<br>    policy_namespace           = string<br>    instance_profile_namespace = string<br>  })</pre> | n/a | yes |
+| <a name="input_prefix"></a> [prefix](#input\_prefix) | The prefix used for naming resources | `string` | `"github-actions"` | no |
 
 ## Outputs
 
diff --git a/modules/webhook/README.md b/modules/webhook/README.md
index caa84e8b34..9da8c349b6 100644
--- a/modules/webhook/README.md
+++ b/modules/webhook/README.md
@@ -78,6 +78,7 @@ No modules.
 | <a name="input_environment"></a> [environment](#input\_environment) | A name that identifies the environment, used as prefix and for tagging. | `string` | `null` | no |
 | <a name="input_github_app_webhook_secret_arn"></a> [github\_app\_webhook\_secret\_arn](#input\_github\_app\_webhook\_secret\_arn) | n/a | `string` | n/a | yes |
 | <a name="input_kms_key_arn"></a> [kms\_key\_arn](#input\_kms\_key\_arn) | Optional CMK Key ARN to be used for Parameter Store. | `string` | `null` | no |
+| <a name="input_lambda_architecture"></a> [lambda\_architecture](#input\_lambda\_architecture) | AWS Lambda architecture. Lambda functions using Graviton processors ('arm64') tend to have better price/performance than 'x86\_64' functions. | `string` | `"x86_64"` | no |
 | <a name="input_lambda_runtime"></a> [lambda\_runtime](#input\_lambda\_runtime) | AWS Lambda runtime. | `string` | `"nodejs16.x"` | no |
 | <a name="input_lambda_s3_bucket"></a> [lambda\_s3\_bucket](#input\_lambda\_s3\_bucket) | S3 bucket from which to specify lambda functions. This is an alternative to providing local files directly. | `any` | `null` | no |
 | <a name="input_lambda_timeout"></a> [lambda\_timeout](#input\_lambda\_timeout) | Time out of the lambda in seconds. | `number` | `10` | no |