diff --git a/Makefile b/Makefile
index a43977a..55bae4f 100644
--- a/Makefile
+++ b/Makefile
@@ -21,8 +21,16 @@ packer:
 	unzip ./packer.zip
 	rm ./packer.zip
 
-release.auto.pkrvars.hcl:
-	echo "Missing configuration file: release.auto.pkrvars.hcl."
+release-al1.auto.pkrvars.hcl:
+	echo "Missing configuration file: release-al1.auto.pkrvars.hcl."
+	exit 1
+
+release-al2.auto.pkrvars.hcl:
+	echo "Missing configuration file: release-al2.auto.pkrvars.hcl."
+	exit 1
+
+release-al2023.auto.pkrvars.hcl:
+	echo "Missing configuration file: release-al2023.auto.pkrvars.hcl."
 	exit 1
 
 .PHONY: check-region
@@ -42,47 +50,47 @@ validate: check-region init
 	./packer validate -var "region=${REGION}" .
 
 .PHONY: al1
-al1: check-region init validate release.auto.pkrvars.hcl
+al1: check-region init validate release-al1.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al1" -var "region=${REGION}" .
 
 .PHONY: al2
-al2: check-region init validate release.auto.pkrvars.hcl
+al2: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2" -var "region=${REGION}" .
 
 .PHONY: al2arm
-al2arm: check-region init validate release.auto.pkrvars.hcl
+al2arm: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2arm" -var "region=${REGION}" .
 
 .PHONY: al2gpu
-al2gpu: check-region init validate release.auto.pkrvars.hcl
+al2gpu: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2gpu" -var "region=${REGION}" .
 
 .PHONY: al2keplergpu
-al2keplergpu: check-region init validate release.auto.pkrvars.hcl
+al2keplergpu: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2keplergpu" -var "region=${REGION}" .
 
 .PHONY: al2inf
-al2inf: check-region init validate release.auto.pkrvars.hcl
+al2inf: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2inf" -var "region=${REGION}" .
 
 .PHONY: al2kernel5dot10
-al2kernel5dot10: check-region init validate release.auto.pkrvars.hcl
+al2kernel5dot10: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2kernel5dot10" -var "region=${REGION}" .
 
 .PHONY: al2kernel5dot10arm
-al2kernel5dot10arm: check-region init validate release.auto.pkrvars.hcl
+al2kernel5dot10arm: check-region init validate release-al2.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2kernel5dot10arm" -var "region=${REGION}" .
 
 .PHONY: al2023
-al2023: check-region init validate release.auto.pkrvars.hcl
+al2023: check-region init validate release-al2023.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2023" -var "region=${REGION}" .
 
 .PHONY: al2023arm
-al2023arm: check-region init validate release.auto.pkrvars.hcl
+al2023arm: check-region init validate release-al2023.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2023arm" -var "region=${REGION}" .
 
 .PHONY: al2023neu
-al2023neu: check-region init validate release.auto.pkrvars.hcl
+al2023neu: check-region init validate release-al2023.auto.pkrvars.hcl
 	./packer build -only="amazon-ebs.al2023neu" -var "region=${REGION}" .
 
 shellcheck:
diff --git a/release-al1.auto.pkrvars.hcl b/release-al1.auto.pkrvars.hcl
new file mode 100644
index 0000000..fb4028a
--- /dev/null
+++ b/release-al1.auto.pkrvars.hcl
@@ -0,0 +1,2 @@
+ami_version    = "20231024"
+source_ami_al1 = "amzn-ami-minimal-hvm-2018.03.0.20231002.0-x86_64-ebs"
diff --git a/release-al2.auto.pkrvars.hcl b/release-al2.auto.pkrvars.hcl
new file mode 100644
index 0000000..c264943
--- /dev/null
+++ b/release-al2.auto.pkrvars.hcl
@@ -0,0 +1,5 @@
+ami_version                   = "20231024"
+source_ami_al2                = "amzn2-ami-minimal-hvm-2.0.20230926.0-x86_64-ebs"
+source_ami_al2arm             = "amzn2-ami-minimal-hvm-2.0.20230926.0-arm64-ebs"
+source_ami_al2kernel5dot10    = "amzn2-ami-minimal-hvm-2.0.20230926.0-x86_64-ebs"
+source_ami_al2kernel5dot10arm = "amzn2-ami-minimal-hvm-2.0.20230926.0-arm64-ebs"
\ No newline at end of file
diff --git a/release-al2023.auto.pkrvars.hcl b/release-al2023.auto.pkrvars.hcl
new file mode 100644
index 0000000..5f861c5
--- /dev/null
+++ b/release-al2023.auto.pkrvars.hcl
@@ -0,0 +1,6 @@
+ami_version                 = "20231024"
+source_ami_al2023           = "al2023-ami-minimal-2023.2.20230920.1-kernel-6.1-x86_64"
+source_ami_al2023arm        = "al2023-ami-minimal-2023.2.20230920.1-kernel-6.1-arm64"
+kernel_version_al2023       = "-kernel-6.1"
+kernel_version_al2023arm    = "-kernel-6.1"
+distribution_release_al2023 = "2023.2.20230920"
diff --git a/release.auto.pkrvars.hcl b/release.auto.pkrvars.hcl
deleted file mode 100644
index c5e2ba3..0000000
--- a/release.auto.pkrvars.hcl
+++ /dev/null
@@ -1,17 +0,0 @@
-ami_version                   = "20231024"
-ecs_agent_version             = "1.78.0"
-ecs_init_rev                  = "1"
-docker_version                = "20.10.25"
-docker_version_al2023         = "20.10.25"
-containerd_version            = "1.6.19"
-containerd_version_al2023     = "1.6.19"
-source_ami_al1                = "amzn-ami-minimal-hvm-2018.03.0.20231002.0-x86_64-ebs"
-source_ami_al2                = "amzn2-ami-minimal-hvm-2.0.20230926.0-x86_64-ebs"
-source_ami_al2arm             = "amzn2-ami-minimal-hvm-2.0.20230926.0-arm64-ebs"
-source_ami_al2kernel5dot10    = "amzn2-ami-minimal-hvm-2.0.20230926.0-x86_64-ebs"
-source_ami_al2kernel5dot10arm = "amzn2-ami-minimal-hvm-2.0.20230926.0-arm64-ebs"
-source_ami_al2023             = "al2023-ami-minimal-2023.2.20230920.1-kernel-6.1-x86_64"
-source_ami_al2023arm          = "al2023-ami-minimal-2023.2.20230920.1-kernel-6.1-arm64"
-kernel_version_al2023         = "-kernel-6.1"
-kernel_version_al2023arm      = "-kernel-6.1"
-distribution_release_al2023   = "2023.2.20230920"
diff --git a/variables.pkr.hcl b/variables.pkr.hcl
index 7e7f650..f0780e0 100644
--- a/variables.pkr.hcl
+++ b/variables.pkr.hcl
@@ -37,44 +37,50 @@ variable "region" {
 
 variable "block_device_size_gb" {
   type        = number
-  default     = 30
   description = "Size of the root block device."
+  default     = 30
 }
 
 variable "ecs_agent_version" {
   type        = string
   description = "ECS agent version to build AMI with."
+  default     = "1.79.0"
 }
 
 variable "ecs_init_rev" {
   type        = string
   description = "ecs-init package version rev"
+  default     = "1"
 }
 
 variable "docker_version" {
   type        = string
   description = "Docker version to build AMI with."
+  default     = "20.10.25"
 }
 
 variable "containerd_version" {
   type        = string
   description = "Containerd version to build AMI with."
+  default     = "1.6.19"
 }
 
 variable "docker_version_al2023" {
   type        = string
   description = "Docker version to build AL2023 AMI with."
+  default     = "20.10.25"
 }
 
 variable "containerd_version_al2023" {
   type        = string
   description = "Containerd version to build AL2023 AMI with."
+  default     = "1.6.19"
 }
 
 variable "exec_ssm_version" {
   type        = string
-  default     = "3.2.1630.0"
   description = "SSM binary version to build ECS exec support with."
+  default     = "3.2.1630.0"
 }
 
 variable "source_ami_al2" {