[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-08-11。"],[],[],null,["# About migration planning\n\nAfter you complete the discovery and assessment phase, and set up your\nfoundation design, you can start planning your migration by categorizing\nyour workloads into *migration waves*.\n\nThis page describes how to plan a successful migration.\n\nBefore you begin\n----------------\n\nBefore you start your migration planning, complete a\n[workload discovery and assessment](/migration-center/docs/discovery-and-assessment-overview),\nand create an overall migration strategy with the following tasks:\n\n- Create a catalog of workloads, such as applications, services, and databases, that you want to migrate.\n- Map the workloads to infrastructure components.\n- Map the dependencies.\n- Identify high level migration and modernization paths (rehost, replatform, refactor, re-architect, replace, retire).\n\nThen, use the\n[Cloud Foundation Toolkit](/foundation-toolkit)\nto build your foundation on Google Cloud.\n\nThe Cloud Foundation Toolkit includes resources to help you get started with the\nfollowing aspects of your new cloud infrastructure:\n\n- Identity and Access Management\n- Resource management\n- Networking\n- Data management\n- Infrastructure as code\n- Logging, monitoring, and billing\n- Security foundations\n- GKE foundations\n\n| **Note:** [Foundations design and set up](/architecture/migration-to-google-cloud-building-your-foundation) is a preliminary step to migration planning and landing zone creation. You must tailor your migration landing zones to meet your specific use cases and application requirements. The details of the landing zone, such as IAM, networking constructs, logging, monitoring, billing, and security, are determined based on the fundamental design elements created during the foundations design phase.\n\nMigration concepts\n------------------\n\nA **cloud migration project** represents the entire process that\nyour organization follows to migrate the applications to Google Cloud.\n\nEach cloud migration project is divided into **waves**. A wave is a group of\napplications that share common characteristics or interdependencies, as\nidentified by the workload discovery and assessment. Standalone applications and\ndatabases are typically good candidates for a first migration wave, given their\nlow external dependencies. On the other hand, applications with many\ndependencies would constitute a complex migration wave that requires\nadditional planning.\n\nApplications within a migration wave are divided into **move groups** and\nmigrated to Google Cloud in **sprints**.\nA move group is a group of infrastructure resources and workloads that\nyou need to migrate together.\nThese resources and workloads can be part of the same application, or a group\nof applications that are interdependent.\n\nBusiness capability is one of the most important aspects to determine the move\ngroups. For example, supply chain management and inventory management in\nretail, fraud monitoring in banking, claim processing in insurance, represent\nbusiness capability areas in the respective domains.\nConsidering business capability is critical to ensure minimal or no\ndisruption to business service performance and availability during\nand after migration.\n\nWithin a business capability area, you need to perform the migration\naccording to your different environments.\nResearch and development (R\\&D) environments are typically the first to be\nmigrated. This helps you identify and mitigate any blockers that might\nprevent or slow down the migration.\nYou can then follow the best practices and mitigation activities\nas you progress through the migration of R\\&D, pre-production\nand production environments.\n\nYou need to run **discovery and assessment** as an ongoing process, with data\ncollection getting increasingly refined and more accurate over time.\nThis lets you constantly improve the accuracy of workload-specific data,\nwhich helps you identify workload-specific risks associated with the\ncloud migration.\n\nThe first wave of discovery and assessment lets you create a high-level map\nof the dependencies between your infrastructure components and workloads.\nThis helps you plan and optimize the elements of your target Google Cloud\narchitecture during the first wave---for example, VM types, storage classes,\nlanding zone design, high-level capacity sizing based on computational\nand I/O throughput requirements.\n\nYou also need to run a **migration risk assessment** in parallel with\ndiscovery and assessment. The aim is to identify and measure the\nworkload-specific risks associated with the migration, and to\nstart the appropriate mitigation actions.\n\nThe following diagram shows the whole migration process at a glance.\n\nWhat's next\n-----------\n\n- Learn how to [evaluate and mitigate the migration risks](/migration-center/docs/migration-risks).\n- Learn how to [plan your migration waves](/migration-center/docs/plan-migration-waves)."]]