Atlassian发布了一个关于持续集成、持续交付和持续部署的很好的解释。

简而言之:

持续集成——是 每当新提交被推入分支时，自动构建和测试应用程序。

持续交付——即持续集成+通过“点击一个按钮”将应用程序部署到生产环境(通常是发布给客户，但按需发布)。

持续部署-是 持续交付，但没有人为干预(向客户发布正在进行中)。

我认为亚马逊的定义是直接和简单的理解。

持续交付是一种软件开发方法，其中发布过程是自动化的。每个软件变更都会自动构建、测试并部署到生产环境中。在最终发布到生产环境之前，由一个人、一个自动化测试或一个业务规则决定何时进行最后的发布。尽管每个成功的软件变更都可以立即发布到持续交付的生产环境中，但并不是所有的变更都需要立即发布。

Continuous integration is a software development practice where members of a team use a version control system and integrate their work frequently to the same location, such as a master branch. Each change is built and verified by tests and other verifications in order to detect any integration errors as quickly as possible. Continuous integration is focused on automatically building and testing code, as compared to continuous delivery, which automates the entire software release process up to production."

请访问http://docs.aws.amazon.com/codepipeline/latest/userguide/concepts.html

持续集成:是开发人员尽可能频繁地将对代码库的更改合并到主分支的实践。通过创建构建，然后对构建运行自动化测试来验证这些更改。如果这些测试没有通过，更改就不会合并，开发人员就会避免可能发生的集成挑战。

Continuous Delivery : is an extension of CI since it enables automation to deploy all the code changes to an environment (dev, qa, stage, prod, etc) after the changes have been merged. The artifact may be built as part of CI or as part of this process since the source of truth (your repository) is reliable given your CI process. In simple terms, this means that there is an automated release process on top of the automated testing process and that developers can deploy their changes at any time by simply clicking a button or at the completion of CI.

持续部署:比持续交付更进一步。在这里，在管道的每个阶段通过验证步骤的所有更改都将发布到生产环境中。这个过程是完全自动化的，只有一个失败的验证步骤才能阻止将更改推到生产环境中。

持续集成

自动化(签入+单元测试的构建)

持续交付

持续集成 自动化(部署到测试环境+负载测试+集成测试) 手动(从部署到生产)

持续部署

持续交付但自动化(部署到生产)

CI/CD是一段旅程。不是目的地。

These stages are suggestions. You can adapt the stages based on your business need. Some stages can be repeated for multiple types of testing, security, and performance. Depending on the complexity of your project and the structure of your teams, some stages can be repeated several times at different levels. For example, the end product of one team can become a dependency in the project of the next team. This means that the first team’s end product is subsequently staged as an artifact in the next team’s project.

补充说明:

连续练习 集成与持续 AWS交付

让我们长话短说:

置信区间: 一种软件开发实践，团队成员至少每天集成他们的工作。每个集成都通过自动构建(包括测试)进行验证，以尽可能快地检测错误。 CD: CD构建在CI之上，在CI中构建软件时，软件可以在任何时候发布到生产环境。

DevOps是3C的组合——持续、沟通、协作，这导致了各个行业的主要关注。

在物联网连接设备的世界中，产品所有者、web、移动和QA等多种scrum功能以敏捷的方式在scrum周期中工作，将产品交付给最终客户。

持续集成:多个scrum特性在多个端点同时工作 持续交付:通过集成和部署，同时向多个客户交付产品。 持续部署:在多个平台上将多个产品部署到多个客户。

观看此视频，了解DevOps如何实现物联网连接的世界:https://youtu.be/nAfZt2t4HqA