diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index f94e143c..215c7876 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -9,7 +9,8 @@
     "ghcr.io/devcontainers/features/aws-cli:1": {},
     "ghcr.io/devcontainers/features/terraform:1": {},
     "ghcr.io/devcontainers/features/docker-from-docker:1.5.0": {},
-    "ghcr.io/devcontainers-contrib/features/aws-cdk:2": {}
+    "ghcr.io/devcontainers-contrib/features/aws-cdk:2": {},
+    "ghcr.io/dhoeric/features/tfsec:1": {}
   },
   "customizations": {
     "vscode": {
diff --git a/infrastructure/cloud/environments/dev/dev.tfvars b/infrastructure/cloud/environments/dev/dev.tfvars
index 8cfc13c2..1b6c8ec1 100644
--- a/infrastructure/cloud/environments/dev/dev.tfvars
+++ b/infrastructure/cloud/environments/dev/dev.tfvars
@@ -1,5 +1,5 @@
 region              = "ca-central-1"
 test_s3_bucket_name = "jasper-test-s3-bucket-dev"
 web_subnet_names    = ["Web_Dev_aza_net", "Web_Dev_azb_net"]
-# api_subnet_names    = ["App_Dev_aza_net", "App_Dev_azb_net"]
-# db_subnet_names     = ["Data_Dev_aza_net", "Data_Dev_azb_net"]
+app_subnet_names    = ["App_Dev_aza_net", "App_Dev_azb_net"]
+data_subnet_names   = ["Data_Dev_aza_net", "Data_Dev_azb_net"]
diff --git a/infrastructure/cloud/environments/dev/variables.tf b/infrastructure/cloud/environments/dev/variables.tf
index 6bd35f71..ee068f95 100644
--- a/infrastructure/cloud/environments/dev/variables.tf
+++ b/infrastructure/cloud/environments/dev/variables.tf
@@ -33,12 +33,12 @@ variable "web_subnet_names" {
   type        = list(string)
 }
 
-# variable "api_subnet_names" {
-#   description = "List of Subnets for API"
-#   type        = list(string)
-# }
-
-# variable "db_subnet_names" {
-#   description = "List of Subnets for Database"
-#   type        = list(string)
-# }
+variable "app_subnet_names" {
+  description = "List of Subnets for App"
+  type        = list(string)
+}
+
+variable "data_subnet_names" {
+  description = "List of Subnets for Data"
+  type        = list(string)
+}
diff --git a/infrastructure/cloud/environments/dev/webapp.tf b/infrastructure/cloud/environments/dev/webapp.tf
index 0d8d3f0d..c8336e92 100644
--- a/infrastructure/cloud/environments/dev/webapp.tf
+++ b/infrastructure/cloud/environments/dev/webapp.tf
@@ -18,14 +18,14 @@ module "storage" {
 }
 
 module "networking" {
-  source           = "../../modules/networking"
-  environment      = var.environment
-  app_name         = var.app_name
-  region           = var.region
-  vpc_id           = var.vpc_id
-  web_subnet_names = var.web_subnet_names
-  # api_subnet_names = var.api_subnet_names
-  # db_subnet_names  = var.db_subnet_names
+  source            = "../../modules/networking"
+  environment       = var.environment
+  app_name          = var.app_name
+  region            = var.region
+  vpc_id            = var.vpc_id
+  web_subnet_names  = var.web_subnet_names
+  app_subnet_names  = var.app_subnet_names
+  data_subnet_names = var.data_subnet_names
 }
 
 module "container" {
@@ -35,7 +35,7 @@ module "container" {
   region                    = var.region
   ecs_execution_role_arn    = module.security.ecs_execution_role_arn
   subnet_ids                = module.networking.web_subnets_ids
-  sg_id                     = module.networking.ecs_sg_id
+  ecs_sg_id                 = module.networking.ecs_sg_id
   lb_tg_arn                 = module.networking.lb_tg_arn
   ecs_web_td_log_group_name = module.monitoring.ecs_web_td_log_group_name
   ecs_api_td_log_group_name = module.monitoring.ecs_api_td_log_group_name
diff --git a/infrastructure/cloud/modules/container/ecs.tf b/infrastructure/cloud/modules/container/ecs.tf
index 2e0527da..800fad56 100644
--- a/infrastructure/cloud/modules/container/ecs.tf
+++ b/infrastructure/cloud/modules/container/ecs.tf
@@ -51,7 +51,7 @@ resource "aws_ecs_service" "ecs_web_service" {
 
   network_configuration {
     subnets          = var.subnet_ids
-    security_groups  = [var.sg_id]
+    security_groups  = [var.ecs_sg_id]
     assign_public_ip = true
   }
 
@@ -102,7 +102,7 @@ resource "aws_ecs_service" "ecs_api_service" {
 
   network_configuration {
     subnets          = var.subnet_ids
-    security_groups  = [var.sg_id]
+    security_groups  = [var.ecs_sg_id]
     assign_public_ip = true
   }
 
diff --git a/infrastructure/cloud/modules/container/variables.tf b/infrastructure/cloud/modules/container/variables.tf
index 4d775e11..4edc75c4 100644
--- a/infrastructure/cloud/modules/container/variables.tf
+++ b/infrastructure/cloud/modules/container/variables.tf
@@ -23,7 +23,7 @@ variable "subnet_ids" {
   type        = list(string)
 }
 
-variable "sg_id" {
+variable "ecs_sg_id" {
   description = "Load Balancer Security Group ID"
   type        = string
 }
diff --git a/infrastructure/cloud/modules/networking/alb.tf b/infrastructure/cloud/modules/networking/alb.tf
index 8ebcdbba..04b7c063 100644
--- a/infrastructure/cloud/modules/networking/alb.tf
+++ b/infrastructure/cloud/modules/networking/alb.tf
@@ -1,7 +1,7 @@
 resource "aws_lb" "lb" {
   name                       = "${var.app_name}-lb-${var.environment}"
   subnets                    = local.web_subnets
-  security_groups            = [aws_security_group.sg.id]
+  security_groups            = [aws_security_group.lb_sg.id]
   internal                   = true
   load_balancer_type         = "application"
   enable_http2               = true
diff --git a/infrastructure/cloud/modules/networking/outputs.tf b/infrastructure/cloud/modules/networking/outputs.tf
index 45f61ce9..5c25d098 100644
--- a/infrastructure/cloud/modules/networking/outputs.tf
+++ b/infrastructure/cloud/modules/networking/outputs.tf
@@ -1,7 +1,3 @@
-output "sg_id" {
-  value = aws_security_group.sg.id
-}
-
 output "lb_tg_arn" {
   value = aws_lb_target_group.lb_target_group.arn
 }
diff --git a/infrastructure/cloud/modules/networking/securitygroup.tf b/infrastructure/cloud/modules/networking/securitygroup.tf
index c53849ff..21eeb80e 100644
--- a/infrastructure/cloud/modules/networking/securitygroup.tf
+++ b/infrastructure/cloud/modules/networking/securitygroup.tf
@@ -1,59 +1,146 @@
-# Load Balancer Security Group	
-resource "aws_security_group" "sg" {
+#
+# Load Balancer Security Group
+#
+resource "aws_security_group" "lb_sg" {
   name        = "${var.app_name}-lb-sg-${var.environment}"
   vpc_id      = data.aws_vpc.vpc.id
-  description = "May change once Network Architecture has been finalized."
-
-  ingress {
-    description = "Allow inbound HTTP traffic on port 80"
-    from_port   = 80
-    to_port     = 80
-    protocol    = "tcp"
-    cidr_blocks = ["0.0.0.0/0"]
-  }
+  description = "Security Group for the Application Load Balancer"
 
-  ingress {
-    description = "Accept traffic on port 8080"
-    from_port   = 8080
-    to_port     = 8080
-    protocol    = "tcp"
-    cidr_blocks = ["0.0.0.0/0"]
+  tags = {
+    Name = "${var.app_name}_lb_sg_${var.environment}"
   }
+}
 
-  egress {
-    description = "Unrestricted"
-    from_port   = 0
-    to_port     = 0
-    protocol    = "-1"
-    cidr_blocks = ["0.0.0.0/0"]
-  }
+# Load Balancer Ingress Rules. This will change once we get the public load balancer details from cloud team.
+resource "aws_vpc_security_group_ingress_rule" "lb_sg_ingress_http_allow_80" {
+  security_group_id = aws_security_group.lb_sg.id
+  description       = "Allow inbound HTTP traffic on port 80"
+  ip_protocol       = "tcp"
+  from_port         = 80
+  to_port           = 80
+  cidr_ipv4         = "0.0.0.0/0"
+}
 
-  tags = {
-    Name = "${var.app_name}_sg_${var.environment}"
-  }
+resource "aws_vpc_security_group_ingress_rule" "lb_sg_ingress_http_allow_8080" {
+  security_group_id = aws_security_group.lb_sg.id
+  description       = "Allow inbound HTTP traffic on port 8080"
+  ip_protocol       = "tcp"
+  from_port         = 8080
+  to_port           = 8080
+  cidr_ipv4         = "0.0.0.0/0"
 }
 
+# Load Balancer Egress Rules
+resource "aws_vpc_security_group_egress_rule" "lb_sg_egress_allow_to_ecs_sg" {
+  security_group_id            = aws_security_group.lb_sg.id
+  referenced_security_group_id = aws_security_group.ecs_sg.id
+  description                  = "Allow all outbound traffic to ECS SG from Load Balancer SG"
+  ip_protocol                  = "-1"
+}
 
-# ECS Security Group	
+#
+# ECS Security Group
+#
 resource "aws_security_group" "ecs_sg" {
   name        = "${var.app_name}-ecs-sg-${var.environment}"
   vpc_id      = data.aws_vpc.vpc.id
-  description = "May change once Network Architecture has been finalized."
-
-  ingress {
-    description     = "Accept traffic on port 8080 and from specific Security Group"
-    from_port       = 8080
-    to_port         = 8080
-    protocol        = "tcp"
-    cidr_blocks     = null
-    security_groups = [aws_security_group.sg.id]
+  description = "Security Group for ECS services"
+
+  tags = {
+    Name = "${var.app_name}_ecs_sg_${var.environment}"
   }
+}
+
+# ECS Ingress Rules
+# Remove ecs_sg_ingress_allow_icmp and ecs_sg_ingress_allow_ssh once the JASPER
+# is publicly accessible. These ingress rules is for tesing SG-SG connectivity using
+# EC2 Instance and EC2 Instance Connect Endpoint 
+resource "aws_vpc_security_group_ingress_rule" "ecs_sg_ingress_allow_from_lb_sg" {
+  security_group_id            = aws_security_group.ecs_sg.id
+  referenced_security_group_id = aws_security_group.lb_sg.id
+  description                  = "Allow all inbound traffic from ECS SG"
+  ip_protocol                  = -1
+}
+
+resource "aws_vpc_security_group_ingress_rule" "ecs_sg_ingress_allow_from_lambda_sg" {
+  security_group_id            = aws_security_group.ecs_sg.id
+  referenced_security_group_id = aws_security_group.lambda_sg.id
+  description                  = "Allow all inbound traffic from Lambda SG"
+  ip_protocol                  = -1
+}
+
+resource "aws_vpc_security_group_ingress_rule" "ecs_sg_ingress_allow_icmp" {
+  security_group_id = aws_security_group.ecs_sg.id
+  description       = "Allow inbound ICMP traffic to ECS SG to allow pinging the Lambda SG"
+  ip_protocol       = "icmp"
+  from_port         = -1
+  to_port           = -1
+  cidr_ipv4         = "0.0.0.0/0"
+}
+
+resource "aws_vpc_security_group_ingress_rule" "ecs_sg_ingress_allow_ssh" {
+  security_group_id = aws_security_group.ecs_sg.id
+  description       = "Allow inbound SSH traffic to ECS SG"
+  ip_protocol       = "tcp"
+  from_port         = 22
+  to_port           = 22
+  cidr_ipv4         = data.aws_vpc.vpc.cidr_block
+}
+
+# ECS Egress Rules
+resource "aws_vpc_security_group_egress_rule" "ecs_sg_egress_allow_to_anywhere" {
+  security_group_id = aws_security_group.ecs_sg.id
+  description       = "Unrestricted"
+  ip_protocol       = "-1"
+  cidr_ipv4         = "0.0.0.0/0"
+}
+
+#
+# Lambda Security Group
+#
+resource "aws_security_group" "lambda_sg" {
+  name        = "${var.app_name}-lambda-sg-${var.environment}"
+  vpc_id      = data.aws_vpc.vpc.id
+  description = "Security Group for Lambda functions"
 
-  egress {
-    description = "Unrestricted"
-    from_port   = 0
-    to_port     = 0
-    protocol    = "-1"
-    cidr_blocks = ["0.0.0.0/0"]
+  tags = {
+    Name = "${var.app_name}_lambda_sg_${var.environment}"
   }
 }
+
+# Lambda Ingress Rules
+# Remove lambda_sg_ingress_allow_icmp and lambda_sg_ingress_allow_ssh once the JASPER
+# is publicly accessible. These ingress rules is for tesing SG-SG connectivity using
+# EC2 Instance and EC2 Instance Connect Endpoint 
+resource "aws_vpc_security_group_ingress_rule" "lambda_sg_ingress_allow_from_ecs_sg" {
+  security_group_id            = aws_security_group.lambda_sg.id
+  referenced_security_group_id = aws_security_group.ecs_sg.id
+  description                  = "Allow all inbound traffic from ECS SG"
+  ip_protocol                  = -1
+}
+
+resource "aws_vpc_security_group_ingress_rule" "lambda_sg_ingress_allow_icmp" {
+  security_group_id = aws_security_group.lambda_sg.id
+  description       = "Allow inbound ICMP traffic to Lambda SG to allow pinging the ECS SG"
+  ip_protocol       = "icmp"
+  from_port         = -1
+  to_port           = -1
+  cidr_ipv4         = "0.0.0.0/0"
+}
+
+resource "aws_vpc_security_group_ingress_rule" "lambda_sg_ingress_allow_ssh" {
+  security_group_id = aws_security_group.lambda_sg.id
+  description       = "Allow inbound SSH traffic to Lambda SG"
+  ip_protocol       = "tcp"
+  from_port         = 22
+  to_port           = 22
+  cidr_ipv4         = data.aws_vpc.vpc.cidr_block
+}
+
+# Lambda Egress Rules
+resource "aws_vpc_security_group_egress_rule" "lambda_sg_egress_allow_to_anywhere" {
+  security_group_id = aws_security_group.lambda_sg.id
+  description       = "Unrestricted"
+  ip_protocol       = "-1"
+  cidr_ipv4         = "0.0.0.0/0"
+}
diff --git a/infrastructure/cloud/modules/networking/subnets.tf b/infrastructure/cloud/modules/networking/subnets.tf
new file mode 100644
index 00000000..237d4a27
--- /dev/null
+++ b/infrastructure/cloud/modules/networking/subnets.tf
@@ -0,0 +1,49 @@
+data "aws_subnets" "all_subnets" {
+  filter {
+    name   = "vpc-id"
+    values = [data.aws_vpc.vpc.id]
+  }
+}
+
+data "aws_subnet" "subnets" {
+  for_each = toset(data.aws_subnets.all_subnets.ids)
+  id       = each.key
+}
+
+locals {
+  temp_web_subnets = {
+    for tag_value in var.web_subnet_names :
+    tag_value => [
+      for subnet in data.aws_subnet.subnets :
+      subnet.id if substr(subnet.tags["Name"], 0, length(tag_value)) == tag_value
+    ]
+  }
+
+  web_subnets = flatten([
+    for subnets in local.temp_web_subnets : subnets
+  ])
+
+  temp_app_subnets = {
+    for tag_value in var.app_subnet_names :
+    tag_value => [
+      for subnet in data.aws_subnet.subnets :
+      subnet.id if substr(subnet.tags["Name"], 0, length(tag_value)) == tag_value
+    ]
+  }
+
+  app_subnets = flatten([
+    for subnets in local.temp_app_subnets : subnets
+  ])
+
+  temp_data_subnets = {
+    for tag_value in var.data_subnet_names :
+    tag_value => [
+      for subnet in data.aws_subnet.subnets :
+      subnet.id if substr(subnet.tags["Name"], 0, length(tag_value)) == tag_value
+    ]
+  }
+
+  data_subnets = flatten([
+    for subnets in local.temp_data_subnets : subnets
+  ])
+}
diff --git a/infrastructure/cloud/modules/networking/variables.tf b/infrastructure/cloud/modules/networking/variables.tf
index f6ebefa2..f3b53b07 100644
--- a/infrastructure/cloud/modules/networking/variables.tf
+++ b/infrastructure/cloud/modules/networking/variables.tf
@@ -23,12 +23,12 @@ variable "web_subnet_names" {
   type        = list(string)
 }
 
-# variable "api_subnet_names" {
-#   description = "List of Subnets for API"
-#   type        = list(string)
-# }
+variable "app_subnet_names" {
+  description = "List of Subnets for App"
+  type        = list(string)
+}
 
-# variable "db_subnet_names" {
-#   description = "List of Subnets for Database"
-#   type        = list(string)
-# }
+variable "data_subnet_names" {
+  description = "List of Subnets for Data"
+  type        = list(string)
+}
diff --git a/infrastructure/cloud/modules/networking/vpc.tf b/infrastructure/cloud/modules/networking/vpc.tf
index 5341afa9..34f36776 100644
--- a/infrastructure/cloud/modules/networking/vpc.tf
+++ b/infrastructure/cloud/modules/networking/vpc.tf
@@ -1,68 +1,3 @@
 data "aws_vpc" "vpc" {
   id = var.vpc_id
 }
-
-data "aws_subnets" "all_subnets" {
-  filter {
-    name   = "vpc-id"
-    values = [data.aws_vpc.vpc.id]
-  }
-}
-
-data "aws_subnet" "subnets" {
-  for_each = toset(data.aws_subnets.all_subnets.ids)
-  id       = each.key
-}
-
-locals {
-  temp_web_subnets = {
-    for tag_value in var.web_subnet_names :
-    tag_value => [
-      for subnet in data.aws_subnet.subnets :
-      subnet.id if substr(subnet.tags["Name"], 0, length(tag_value)) == tag_value
-    ]
-  }
-
-  web_subnets = flatten([
-    for subnets in local.temp_web_subnets : subnets
-  ])
-
-  # api_subnets = {
-  #   for tag_value in var.api_subnet_names :
-  #   tag_value => [
-  #     for subnet in data.aws_subnet.all_subnets :
-  #     subnet.id if contains(subnet.tags["Name"], tag_value)
-  #   ]
-  # }
-
-  # db_subnets = {
-  #   for tag_value in var.db_subnet_names :
-  #   tag_value => [
-  #     for subnet in data.aws_subnet.all_subnets :
-  #     subnet.id if contains(subnet.tags["Name"], tag_value)
-  #   ]
-  # }
-}
-
-# resource "aws_internet_gateway" "igw" {
-#   vpc_id = data.aws_vpc.vpc.id
-#   tags = {
-#     Name = "${var.app_name}_igw_${var.environment}"
-#   }
-# }
-
-# resource "aws_route_table" "rt" {
-#   vpc_id = data.aws_vpc.vpc.id
-# }
-
-# resource "aws_route" "route" {
-#   route_table_id         = aws_route_table.rt.id
-#   destination_cidr_block = "0.0.0.0/0"
-#   gateway_id             = aws_internet_gateway.igw.id
-# }
-
-# resource "aws_route_table_association" "rt_assoc" {
-#   count          = length(var.web_subnet_names)
-#   subnet_id      = local.web_subnets[count.index]
-#   route_table_id = aws_route_table.rt.id
-# }