diff --git a/iac-template/terraform-standard/config/resources/dev-object/s3.yaml b/iac-template/terraform-standard/config/resources/dev-object/bucket.yaml
similarity index 100%
rename from iac-template/terraform-standard/config/resources/dev-object/s3.yaml
rename to iac-template/terraform-standard/config/resources/dev-object/bucket.yaml
diff --git a/iac-template/terraform-standard/envs/dev-ec2/backend.tf b/iac-template/terraform-standard/envs/dev-ec2/backend.tf
index aad095bf..4f289d12 100644
--- a/iac-template/terraform-standard/envs/dev-ec2/backend.tf
+++ b/iac-template/terraform-standard/envs/dev-ec2/backend.tf
@@ -1,7 +1,7 @@
 terraform {
   backend "s3" {
     bucket         = "svc-plus-iac-state"
-    key            = "account/dev/iam/terraform.tfstate"
+    key            = "account/dev/ec2/terraform.tfstate"
     region         = "ap-northeast-1"
     dynamodb_table = "svc-plus-iac-state-dynamodb-lock"
   }
diff --git a/iac-template/terraform-standard/envs/dev-object/.gitignore b/iac-template/terraform-standard/envs/dev-object/.gitignore
new file mode 100644
index 00000000..5e697082
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev-object/.gitignore
@@ -0,0 +1,25 @@
+# Local terraform files
+.terraform/
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup
+
+# Auto tfvars generated by CI/CD or sensitive data
+*.tfvars
+*.auto.tfvars
+*.tfvars.json
+
+# IDE / editor files
+.idea/
+.vscode/
+*.swp
+
+# AWS credentials — never commit
+.aws/
+credentials
+config
+
+# OS-specific
+.DS_Store
+Thumbs.db
+
diff --git a/iac-template/terraform-standard/envs/dev-object/backend.tf b/iac-template/terraform-standard/envs/dev-object/backend.tf
index aad095bf..87be4593 100644
--- a/iac-template/terraform-standard/envs/dev-object/backend.tf
+++ b/iac-template/terraform-standard/envs/dev-object/backend.tf
@@ -1,7 +1,7 @@
 terraform {
   backend "s3" {
     bucket         = "svc-plus-iac-state"
-    key            = "account/dev/iam/terraform.tfstate"
+    key            = "account/dev/s3/terraform.tfstate"
     region         = "ap-northeast-1"
     dynamodb_table = "svc-plus-iac-state-dynamodb-lock"
   }
diff --git a/iac-template/terraform-standard/envs/dev-vpc/backend.tf b/iac-template/terraform-standard/envs/dev-vpc/backend.tf
index aad095bf..8bf36c42 100644
--- a/iac-template/terraform-standard/envs/dev-vpc/backend.tf
+++ b/iac-template/terraform-standard/envs/dev-vpc/backend.tf
@@ -1,7 +1,7 @@
 terraform {
   backend "s3" {
     bucket         = "svc-plus-iac-state"
-    key            = "account/dev/iam/terraform.tfstate"
+    key            = "account/dev/vpc/terraform.tfstate"
     region         = "ap-northeast-1"
     dynamodb_table = "svc-plus-iac-state-dynamodb-lock"
   }