准备好开始了吗？来进入下一步

在预览版阶段，产品或功能已准备好接受客户测试。预览版产品通常会公开发布，但功能不一定完整，不提供服务等级协议 (SLA)，也没有技术支持承诺。除非 Google 另有说明，否则预览版产品仅适用于测试环境。预览版阶段平均持续约六个月。

正式版产品和功能面向所有客户开放，已准备好在生产环境中使用，并已纳入 Google Cloud 服务等级协议 (SLA) 的涵盖范围（如适用）。Google 通常会通过 API、CLI 和 Google Cloud 控制台支持正式版产品和功能，除非在特殊情况下，在特定产品或功能的背景下无法合理提供上述一项或多项支持服务。

已弃用的功能会被安排关停和移除。如需了解详情，请参阅 Google Cloud Platform《服务条款》的“服务停用”部分。

Early access: Early access features are limited to a closed group of testers for a limited subset of launches. Participation is by invitation only and may require signing a pre-general-availability agreement, including confidentiality provisions. These features may be unstable, change in backward-incompatible ways, and are not guaranteed to be released. There are no SLAs provided and no technical support obligations. Early access releases are rare and focus on validating product prototypes.

Alpha: Alpha is a limited-availability test before releases are cleared for more widespread use. Our focus with alpha testing is to verify functionality and gather feedback from a limited set of customers. Typically, alpha participation is by invitation and subject to pre-general-availability terms. Alpha releases don't have to be feature complete, no SLAs are provided, and there are no technical support obligations. However, alphas are generally suitable for use in test environments. The alpha phase usually lasts six months.

Beta: At beta, products or features are ready for broader customer testing and use. Betas are often publicly announced. There are no SLAs or technical support obligations in a beta release unless otherwise specified in product terms or the terms of a particular beta program. The average beta phase lasts about six months.