提供註冊頁面，讓透過 Cloud Marketplace 購買產品的新客戶註冊帳戶。使用者造訪這個頁面時，Google 會傳送內含使用者帳戶 ID 的 JSON Web Token (JWT)。您可以使用這個帳戶 ID，將產品中的使用者帳戶連結至他們的 Google 帳戶，並用於 Identity and Access Management (IAM)。
為客戶提供登入頁面。
您也可以選擇：
整合單一登入 (SSO) 服務，讓客戶可以使用 Google 帳戶登入應用程式。如果您整合單一登入 (SSO)，當使用者使用 SSO 登入時，Google 會傳送 JSON Web Token (JWT)，其中包含使用者資訊供您驗證。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[],[],null,["# Integrate your app with Google Cloud Marketplace\n\nThis section is an overview of the steps to integrate your app with\nCloud Marketplace. At a high level, you integrate your app with\nGoogle Cloud in the following ways:\n\n- **Backend integration**\n\n You must integrate your app's backend with the following Google APIs and\n services:\n - Integrate with Pub/Sub to receive notifications from\n Cloud Marketplace, such as when a user signs up for your product.\n Your Partner Engineer creates a Pub/Sub topic that you\n must subscribe to for notifications.\n\n For information on subscribing to a Pub/Sub topic, see\n the [Pub/Sub Subscriber Guide](/pubsub/docs/subscriber).\n - Integrate with the Partner Procurement API to create accounts for\n customers, and to link these accounts with their Cloud Marketplace\n purchase. You must also use the Partner Procurement API to update the\n linked accounts when users change or cancel their subscription plans.\n\n - If you've chosen a usage-based pricing model, integrate with\n Service Control to report usage information.\n\n For detailed information on integrating your app's backend with\n Cloud Marketplace, see\n [Configure your app's backend](/marketplace/docs/partners/integrated-saas/backend-integration).\n\n For an example of integrating the backend of a basic product with\n Cloud Marketplace and a walkthrough of the sample code, see the\n [codelab for integrating a SaaS product](https://codelabs.developers.google.com/codelabs/gcp-marketplace-integrated-saas/#0).\n- **Frontend integration**\n\n In your app's frontend, you must set up the following integrations:\n - Provide a sign up page to sign up accounts for new customers who buy your\n product through Cloud Marketplace. When users visit this page, Google\n sends a\n [JSON Web Token (JWT)](https://jwt.io/introduction/)\n containing the user's account ID. You use this account ID to link the\n user's account in your product with their Google account, and also for\n Identity and Access Management (IAM).\n\n | **Note:** It's possible for a single user to have multiple Google Cloud account IDs, or for multiple users to share a common Google Cloud account ID, depending on how they or their organization have configured their usage of Google Cloud.\n - Provide a login page for your customers.\n\n Optionally, you can choose to:\n - Integrate single sign-on (SSO), so that your customers can sign into your app using their Google accounts. If you integrate SSO, when users sign in by using SSO, Google sends a [JSON Web Token (JWT)](https://jwt.io/introduction/) containing information about the user for you to verify.\n\n For detailed information on integrating your app's frontend with\n Cloud Marketplace, see\n [Integrating your app's frontend](/marketplace/docs/partners/integrated-saas/frontend-integration).\n\nBefore you begin\n----------------\n\n- Verify that your Partner Engineer has enabled access to the Cloud Commerce Partner Procurement API. After your Partner Engineer has granted you access to the Partner Procurement API, you don't need to take any additional steps to enable the API in Google Cloud console.\n\nIntegrate with Google APIs\n--------------------------\n\nYou can integrate your app with Google APIs by\n[using client libraries](/apis/docs/client-libraries-explained), which give you\nprogrammatic access to Google products. The client libraries are available for\nmost popular development platforms, such as Java, Python, and .NET.\n\nInstall the client libraries for your platform from the\n[API Client Libraries page](https://developers.google.com/api-client-library/).\nWith the client libraries, you can:\n\n- Connect to your Pub/Sub subscription, and handle incoming messages.\n- If you chose usage-based pricing, connect to the Service Control API to report usage data to Google.\n\nTo create linked accounts for customers, and to send and receive updates about\nuser accounts, you must also integrate with the Partner Procurement API.\nBecause the Partner Procurement API is restricted, you must build a\nnew client library for the API.\n\nTo build a new client library, you must install the Google client libraries,\nand build a new library from the API discovery document. The discovery document\nfor the Partner Procurement API is at this URL: \n\n https://cloudcommerceprocurement.googleapis.com/$discovery/rest?version=v1\n\nFor example, if you're building a Python client library for the\nPartner Procurement API, use the\n[`build()`](https://googleapis.github.io/google-api-python-client/docs/epy/googleapiclient.discovery-module.html#build)\nmethod. For sample code that builds a client library, see the\n[codelab samples on GitHub](https://github.com/googlecodelabs/gcp-marketplace-integrated-saas/blob/master/python3/impl/step_2_account/app.py#L39)."]]
