[[["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:2025-09-05 (世界標準時間)。"],[],[],null,["# Topology for production-level applications overview\n\nFor mission-critical applications that have a low tolerance for downtime, Google\nrecommends that you use the 99.99% availability configuration. To be covered\nunder the production-level applications [SLA](/network-connectivity/docs/interconnect/sla)\n(99.99% monthly uptime percentage), you must build your network according to\nthis topology.\n\nThe 99.99% availability configuration requires four Cloud Interconnect\nconnections across two [Google Cloud regions](/docs/geography-and-regions). The\nmost common production topologies use four Dedicated Interconnect\nconnections or four Partner Interconnect connections.\n\nAnother way to achieve the 99.99% availability configuration is to create two\nDedicated Interconnect connections in one region and two\nPartner Interconnect connections in another region. For your\nconnection pairs, you must select different metropolitan areas and separate edge\navailability domains.\n\nYou can achieve a 99.99% availability configuration with\nDedicated Interconnect or Partner Interconnect by\nusing the following documents:\n\n- [Establish 99.99% availability for Dedicated Interconnect](/network-connectivity/docs/interconnect/tutorials/dedicated-creating-9999-availability)\n- [Establish 99.99% availability for Partner Interconnect](/network-connectivity/docs/interconnect/tutorials/partner-creating-9999-availability)\n\nTo help you achieve a 99.99% availability configuration, we recommend that you\nuse interconnect connection groups. These groups provide you with information\nabout whether your configuration meets the requirements for your intended level\nof availability. For more information about interconnect connection groups, see\n[Resiliency and SLA options](/network-connectivity/docs/interconnect/concepts/overview#sla-options)."]]