Terraform Azure - Make code re-usable with variables (variables in variables and azurerm.xxx as variables)

I am looking for a freelancer who can help me with my Terraform setup on Azure. I have an existing setup that needs to be modified to make the cord re-usable for using variables. Specifically, I am interested in deploying Networking and Server Resources using Terraform. For this project, I anticipate needing more than 10 variables. Skills and experience required: - Strong knowledge and experience with Terraform and Azure - Familiarity with Networking Resources in Azure - Proficiency in creating re-usable modules and using variables in Terraform - Ability to modify existing Terraform setup - Attention to detail to ensure the smooth deployment of resources - Needs to be done inside terraform *******************************IMPORTANT********************************** i already have variables for primary location, secondary location each subscription id i also have a map for servers. ### The problem i need to overcome is having the ability to have vairables inside variables. eg resourcegroupname = "rg-dc-azs-01" but i want to make up the vairable using the following variable "server_map" { default = { vm-xx-ase-01 = { prefix = "rg" name = "dc" location = "ase" suffix = "01" eg resourcegroupname = "${prefix}${name}${location}${suffix}" ### Im also unable to use [login to view URL] commnads as variables eg provider = var.server_map[[login to view URL]]["provider"] variable "server_map" { default = { vm-xx-ase-01 = { provider = azurerm.ss-identity show me how to get a working solution for each of the issues listed above and i can elaborate on it to complete my code *******************************IMPORTANT********************************** azurerm_management_group azurerm_management_group_subscription_association azurerm_resource_group azurerm_virtual_network azurerm_subnet azurerm_virtual_wan azurerm_virtual_hub azurerm_virtual_hub_connection azurerm_express_route_gateway azurerm_firewall azurerm_firewall_policy azurerm_public_ip azurerm_ip_group azurerm_firewall_policy_rule_collection_group azurerm_vpn_gateway azurerm_vpn_site azurerm_vpn_gateway_connection azurerm azurerm_network_interface azurerm_storage_account azurerm_windows_virtual_machine i already have variables for primary location, secondary location each subscription id i also have a map for servers. ### The problem i need to overcome is having the ability to have vairables inside variables. eg resourcegroupname = "rg-dc-azs-01" but i want to make up the vairable using the following variable "server_map" { default = { vm-xx-ase-01 = { prefix = "rg" name = "dc" location = "ase" suffix = "01" eg resourcegroupname = "${prefix}${name}${location}${suffix}" ### Im also unable to use [login to view URL] commnads as variables eg provider = var.server_map[[login to view URL]]["provider"] variable "server_map" { default = { vm-xx-ase-01 = { provider = azurerm.ss-identity