diff --git a/profiles/latest/compute/mgmt/compute/models.go b/profiles/latest/compute/mgmt/compute/models.go
index 8bafe939394d..c0d6c7644bad 100644
--- a/profiles/latest/compute/mgmt/compute/models.go
+++ b/profiles/latest/compute/mgmt/compute/models.go
@@ -460,6 +460,14 @@ const (
 	Regular VirtualMachinePriorityTypes = original.Regular
 )
 
+type VirtualMachineScaleSetScaleInRules = original.VirtualMachineScaleSetScaleInRules
+
+const (
+	Default  VirtualMachineScaleSetScaleInRules = original.Default
+	NewestVM VirtualMachineScaleSetScaleInRules = original.NewestVM
+	OldestVM VirtualMachineScaleSetScaleInRules = original.OldestVM
+)
+
 type VirtualMachineScaleSetSkuScaleType = original.VirtualMachineScaleSetSkuScaleType
 
 const (
@@ -866,6 +874,7 @@ type RunCommandParameterDefinition = original.RunCommandParameterDefinition
 type RunCommandResult = original.RunCommandResult
 type SSHConfiguration = original.SSHConfiguration
 type SSHPublicKey = original.SSHPublicKey
+type ScaleInPolicy = original.ScaleInPolicy
 type ScheduledEventsProfile = original.ScheduledEventsProfile
 type Sku = original.Sku
 type Snapshot = original.Snapshot
@@ -1508,6 +1517,9 @@ func PossibleVirtualMachineEvictionPolicyTypesValues() []VirtualMachineEvictionP
 func PossibleVirtualMachinePriorityTypesValues() []VirtualMachinePriorityTypes {
 	return original.PossibleVirtualMachinePriorityTypesValues()
 }
+func PossibleVirtualMachineScaleSetScaleInRulesValues() []VirtualMachineScaleSetScaleInRules {
+	return original.PossibleVirtualMachineScaleSetScaleInRulesValues()
+}
 func PossibleVirtualMachineScaleSetSkuScaleTypeValues() []VirtualMachineScaleSetSkuScaleType {
 	return original.PossibleVirtualMachineScaleSetSkuScaleTypeValues()
 }
diff --git a/profiles/preview/compute/mgmt/compute/models.go b/profiles/preview/compute/mgmt/compute/models.go
index c83bb89dce7c..0eb12de56c1f 100644
--- a/profiles/preview/compute/mgmt/compute/models.go
+++ b/profiles/preview/compute/mgmt/compute/models.go
@@ -460,6 +460,14 @@ const (
 	Regular VirtualMachinePriorityTypes = original.Regular
 )
 
+type VirtualMachineScaleSetScaleInRules = original.VirtualMachineScaleSetScaleInRules
+
+const (
+	Default  VirtualMachineScaleSetScaleInRules = original.Default
+	NewestVM VirtualMachineScaleSetScaleInRules = original.NewestVM
+	OldestVM VirtualMachineScaleSetScaleInRules = original.OldestVM
+)
+
 type VirtualMachineScaleSetSkuScaleType = original.VirtualMachineScaleSetSkuScaleType
 
 const (
@@ -866,6 +874,7 @@ type RunCommandParameterDefinition = original.RunCommandParameterDefinition
 type RunCommandResult = original.RunCommandResult
 type SSHConfiguration = original.SSHConfiguration
 type SSHPublicKey = original.SSHPublicKey
+type ScaleInPolicy = original.ScaleInPolicy
 type ScheduledEventsProfile = original.ScheduledEventsProfile
 type Sku = original.Sku
 type Snapshot = original.Snapshot
@@ -1508,6 +1517,9 @@ func PossibleVirtualMachineEvictionPolicyTypesValues() []VirtualMachineEvictionP
 func PossibleVirtualMachinePriorityTypesValues() []VirtualMachinePriorityTypes {
 	return original.PossibleVirtualMachinePriorityTypesValues()
 }
+func PossibleVirtualMachineScaleSetScaleInRulesValues() []VirtualMachineScaleSetScaleInRules {
+	return original.PossibleVirtualMachineScaleSetScaleInRulesValues()
+}
 func PossibleVirtualMachineScaleSetSkuScaleTypeValues() []VirtualMachineScaleSetSkuScaleType {
 	return original.PossibleVirtualMachineScaleSetSkuScaleTypeValues()
 }
diff --git a/services/compute/mgmt/2019-03-01/compute/models.go b/services/compute/mgmt/2019-03-01/compute/models.go
index e5166f2e83e8..debff09eee2e 100644
--- a/services/compute/mgmt/2019-03-01/compute/models.go
+++ b/services/compute/mgmt/2019-03-01/compute/models.go
@@ -948,6 +948,23 @@ func PossibleVirtualMachinePriorityTypesValues() []VirtualMachinePriorityTypes {
 	return []VirtualMachinePriorityTypes{Low, Regular}
 }
 
+// VirtualMachineScaleSetScaleInRules enumerates the values for virtual machine scale set scale in rules.
+type VirtualMachineScaleSetScaleInRules string
+
+const (
+	// Default ...
+	Default VirtualMachineScaleSetScaleInRules = "Default"
+	// NewestVM ...
+	NewestVM VirtualMachineScaleSetScaleInRules = "NewestVM"
+	// OldestVM ...
+	OldestVM VirtualMachineScaleSetScaleInRules = "OldestVM"
+)
+
+// PossibleVirtualMachineScaleSetScaleInRulesValues returns an array of possible values for the VirtualMachineScaleSetScaleInRules const type.
+func PossibleVirtualMachineScaleSetScaleInRulesValues() []VirtualMachineScaleSetScaleInRules {
+	return []VirtualMachineScaleSetScaleInRules{Default, NewestVM, OldestVM}
+}
+
 // VirtualMachineScaleSetSkuScaleType enumerates the values for virtual machine scale set sku scale type.
 type VirtualMachineScaleSetSkuScaleType string
 
@@ -7291,6 +7308,12 @@ type RunCommandResult struct {
 	Value *[]InstanceViewStatus `json:"value,omitempty"`
 }
 
+// ScaleInPolicy describes a scale-in policy for a virtual machine scale set.
+type ScaleInPolicy struct {
+	// Rules - The rules to be followed when scaling-in a virtual machine scale set. <br><br> Possible values are: <br><br> **Default** When a virtual machine scale set is scaled in, the scale set will first be balanced across zones if it is a zonal scale set. Then, it will be balanced across Fault Domains as far as possible. Within each Fault Domain, the virtual machines chosen for removal will be the newest ones that are not protected from scale-in. <br><br> **OldestVM** When a virtual machine scale set is being scaled-in, the oldest virtual machines that are not protected from scale-in will be chosen for removal. For zonal virtual machine scale sets, the scale set will first be balanced across zones. Within each zone, the oldest virtual machines that are not protected will be chosen for removal. <br><br> **NewestVM** When a virtual machine scale set is being scaled-in, the newest virtual machines that are not protected from scale-in will be chosen for removal. For zonal virtual machine scale sets, the scale set will first be balanced across zones. Within each zone, the newest virtual machines that are not protected will be chosen for removal. <br><br>
+	Rules *[]VirtualMachineScaleSetScaleInRules `json:"rules,omitempty"`
+}
+
 // ScheduledEventsProfile ...
 type ScheduledEventsProfile struct {
 	// TerminateNotificationProfile - Specifies Terminate Scheduled Event related configurations.
@@ -10382,6 +10405,8 @@ type VirtualMachineScaleSetProperties struct {
 	ProximityPlacementGroup *SubResource `json:"proximityPlacementGroup,omitempty"`
 	// AdditionalCapabilities - Specifies additional capabilities enabled or disabled on the Virtual Machines in the Virtual Machine Scale Set. For instance: whether the Virtual Machines have the capability to support attaching managed data disks with UltraSSD_LRS storage account type.
 	AdditionalCapabilities *AdditionalCapabilities `json:"additionalCapabilities,omitempty"`
+	// ScaleInPolicy - Specifies the scale-in policy that decides which virtual machines are chosen for removal when a Virtual Machine Scale Set is scaled-in.
+	ScaleInPolicy *ScaleInPolicy `json:"scaleInPolicy,omitempty"`
 }
 
 // VirtualMachineScaleSetPublicIPAddressConfiguration describes a virtual machines scale set IP
@@ -11191,6 +11216,8 @@ type VirtualMachineScaleSetUpdateProperties struct {
 	SinglePlacementGroup *bool `json:"singlePlacementGroup,omitempty"`
 	// AdditionalCapabilities - Specifies additional capabilities enabled or disabled on the Virtual Machines in the Virtual Machine Scale Set. For instance: whether the Virtual Machines have the capability to support attaching managed data disks with UltraSSD_LRS storage account type.
 	AdditionalCapabilities *AdditionalCapabilities `json:"additionalCapabilities,omitempty"`
+	// ScaleInPolicy - Specifies the scale-in policy that decides which virtual machines are chosen for removal when a Virtual Machine Scale Set is scaled-in.
+	ScaleInPolicy *ScaleInPolicy `json:"scaleInPolicy,omitempty"`
 }
 
 // VirtualMachineScaleSetUpdatePublicIPAddressConfiguration describes a virtual machines scale set IP
diff --git a/services/compute/mgmt/2019-07-01/compute/models.go b/services/compute/mgmt/2019-07-01/compute/models.go
index 4ec2778a534e..7851df4347d1 100644
--- a/services/compute/mgmt/2019-07-01/compute/models.go
+++ b/services/compute/mgmt/2019-07-01/compute/models.go
@@ -948,6 +948,23 @@ func PossibleVirtualMachinePriorityTypesValues() []VirtualMachinePriorityTypes {
 	return []VirtualMachinePriorityTypes{Low, Regular}
 }
 
+// VirtualMachineScaleSetScaleInRules enumerates the values for virtual machine scale set scale in rules.
+type VirtualMachineScaleSetScaleInRules string
+
+const (
+	// Default ...
+	Default VirtualMachineScaleSetScaleInRules = "Default"
+	// NewestVM ...
+	NewestVM VirtualMachineScaleSetScaleInRules = "NewestVM"
+	// OldestVM ...
+	OldestVM VirtualMachineScaleSetScaleInRules = "OldestVM"
+)
+
+// PossibleVirtualMachineScaleSetScaleInRulesValues returns an array of possible values for the VirtualMachineScaleSetScaleInRules const type.
+func PossibleVirtualMachineScaleSetScaleInRulesValues() []VirtualMachineScaleSetScaleInRules {
+	return []VirtualMachineScaleSetScaleInRules{Default, NewestVM, OldestVM}
+}
+
 // VirtualMachineScaleSetSkuScaleType enumerates the values for virtual machine scale set sku scale type.
 type VirtualMachineScaleSetSkuScaleType string
 
@@ -7300,6 +7317,12 @@ type RunCommandResult struct {
 	Value *[]InstanceViewStatus `json:"value,omitempty"`
 }
 
+// ScaleInPolicy describes a scale-in policy for a virtual machine scale set.
+type ScaleInPolicy struct {
+	// Rules - The rules to be followed when scaling-in a virtual machine scale set. <br><br> Possible values are: <br><br> **Default** When a virtual machine scale set is scaled in, the scale set will first be balanced across zones if it is a zonal scale set. Then, it will be balanced across Fault Domains as far as possible. Within each Fault Domain, the virtual machines chosen for removal will be the newest ones that are not protected from scale-in. <br><br> **OldestVM** When a virtual machine scale set is being scaled-in, the oldest virtual machines that are not protected from scale-in will be chosen for removal. For zonal virtual machine scale sets, the scale set will first be balanced across zones. Within each zone, the oldest virtual machines that are not protected will be chosen for removal. <br><br> **NewestVM** When a virtual machine scale set is being scaled-in, the newest virtual machines that are not protected from scale-in will be chosen for removal. For zonal virtual machine scale sets, the scale set will first be balanced across zones. Within each zone, the newest virtual machines that are not protected will be chosen for removal. <br><br>
+	Rules *[]VirtualMachineScaleSetScaleInRules `json:"rules,omitempty"`
+}
+
 // ScheduledEventsProfile ...
 type ScheduledEventsProfile struct {
 	// TerminateNotificationProfile - Specifies Terminate Scheduled Event related configurations.
@@ -10391,6 +10414,8 @@ type VirtualMachineScaleSetProperties struct {
 	ProximityPlacementGroup *SubResource `json:"proximityPlacementGroup,omitempty"`
 	// AdditionalCapabilities - Specifies additional capabilities enabled or disabled on the Virtual Machines in the Virtual Machine Scale Set. For instance: whether the Virtual Machines have the capability to support attaching managed data disks with UltraSSD_LRS storage account type.
 	AdditionalCapabilities *AdditionalCapabilities `json:"additionalCapabilities,omitempty"`
+	// ScaleInPolicy - Specifies the scale-in policy that decides which virtual machines are chosen for removal when a Virtual Machine Scale Set is scaled-in.
+	ScaleInPolicy *ScaleInPolicy `json:"scaleInPolicy,omitempty"`
 }
 
 // VirtualMachineScaleSetPublicIPAddressConfiguration describes a virtual machines scale set IP
@@ -11200,6 +11225,8 @@ type VirtualMachineScaleSetUpdateProperties struct {
 	SinglePlacementGroup *bool `json:"singlePlacementGroup,omitempty"`
 	// AdditionalCapabilities - Specifies additional capabilities enabled or disabled on the Virtual Machines in the Virtual Machine Scale Set. For instance: whether the Virtual Machines have the capability to support attaching managed data disks with UltraSSD_LRS storage account type.
 	AdditionalCapabilities *AdditionalCapabilities `json:"additionalCapabilities,omitempty"`
+	// ScaleInPolicy - Specifies the scale-in policy that decides which virtual machines are chosen for removal when a Virtual Machine Scale Set is scaled-in.
+	ScaleInPolicy *ScaleInPolicy `json:"scaleInPolicy,omitempty"`
 }
 
 // VirtualMachineScaleSetUpdatePublicIPAddressConfiguration describes a virtual machines scale set IP