1CorporateITCorporateBUITProvincialITLocalloopITStrategyPlanning/budgetingApplicationDevelopmentSplitofrolesandresponsibilitiesamongITdepartmentsatdifferentlevelsOperationImplementation2RequirementspecificationPlatform/architecturespecificationDesignanddevelopmentImplementation/customizationOperation/supportCustomercareandbillingServiceProvisioningNetworkOperationsNetworkplanningNetworkelementmanagementDecisionsupportsystemsMaintenanceworkforcemanagementInventorymanagementBackofficeSplitofrolesandresponsibilitiesamongITdepartmentsatdifferentlevelsonthebasicITbuildingblocks