Explanation:
Set-AzStorageAccountManagementPolicyコマンドレットは、AzureStorageアカウントの管理ポリシーを作成または変更します。
例：ManagementPolicyルールオブジェクトを使用してストレージアカウントの管理ポリシーを作成または更新します。

アクション-BaseBlobAction削除-daysAfterModificationGreaterThan100
PS C：\> $ action1 = Add-AzStorageAccountManagementPolicyAction -InputObject $ action1 -BaseBlobAction TierToArchive -daysAfterModificationGreaterThan 50 PS C：\> $ action1 = Add-AzStorageAccountManagementPolicyAction -InputObject $ action1 -BaseBlobAction TierToCool -daysAfterModificationGreaterThan 30 PS C：\> $ action1 = Add-AzStorageAccountManagementPolicyAction -InputObject $ action1 -SnapshotAction Delete -daysAfterCreationGreaterThan 100 PS C：\> $ filter1 = New-AzStorageAccountManagementPolicyFilter -PrefixMatch ab、cd PS C：\> $ rule1 = New-AzStorageAccountManagementPolicyRule -Name Test -Action $ action1 -Filter $ filter1 PS C：\> $ action2 = Add-AzStorageAccountManagementPolicyAction -BaseBlobAction Delete -daysAfterModificationGreaterThan 100 PS C：\> $ filter2 = New-AzStorageAccountManagementPolicyFilter参照：
https://docs.microsoft.com/en-us/powershell/module/az.storage/set-azstorageaccountmanagementpolicy