[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Mancano le informazioni di cui ho bisogno","missingTheInformationINeed","thumb-down"],["Troppo complicato/troppi passaggi","tooComplicatedTooManySteps","thumb-down"],["Obsoleti","outOfDate","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Problema relativo a esempi/codice","samplesCodeIssue","thumb-down"],["Altra","otherDown","thumb-down"]],["Ultimo aggiornamento 2025-08-21 UTC."],[],[],null,["**Note:** The current step of this tutorial depends on the [type of application](/google-ads/api/docs/get-started/choose-application-type) you are building. We strongly recommend using a service account to make API calls. However, the user authentication option is also provided as an alternative. The rest of this tutorial will be customized based on your choice. \nService accounts User authentication\n\nCreate a service account and key **Note:** If you are already using another Google API and have created an OAuth 2.0 service account and key, you can skip this step and reuse the existing credentials.\n\nStart by [creating a service account and credentials](/google-ads/api/docs/get-started/choose-application-type).\nNext, [create credentials for the service account](/workspace/guides/create-credentials#service-account).\nDownload the service account key in JSON format and note the service account ID\nand email."]]