Continuous Delivery to Deliver Organization Value

Software systems are essential to every organization to effectively deliver its<br>value. From small startups to large enterprises and governments, it is an<br>enabler to gain competitive advantage and render essential services to its<br>constituents. However, development process have been the main focus of most<br>software professionals. Little attention is given to the test and delivery<br>process. This decreases the effective value delivered by software. Delivery and<br>release dates gets delayed, and the value of software features is lost by the<br>time it reaches customers. I will give an overview of test-driven development, a software engineering<br>technique designed to reduce the feedback loop of delivering high quality<br>software. Next, I show how this extends to the entire software engineering<br>practice by expanding the scope to teams with practices in continuous delivery.<br>Last, I will share how the U.K. Digital Services achieved delivering software<br>with high quality, low cost and fast release cycles from their original<br>situation.

软件系统对于各类组织有效交付其核心价值而言至关重要。从初创小企业到大型企业与政府机构，软件系统均为获取竞争优势、为利益相关方提供核心服务的关键支撑。然而，绝大多数软件从业者的关注焦点长期集中于开发流程，对测试与交付流程却鲜有重视。这一现状削弱了软件所能交付的实际价值：交付与发布节点屡屡延误，待到软件功能触达客户时，其对应的业务价值已然流失。首先，本文将概述测试驱动开发（Test-Driven Development, TDD）——一种旨在缩短高质量软件交付反馈周期的软件工程技术。其次，本文将阐述如何通过将覆盖范围拓展至采用持续交付（Continuous Delivery, CD）实践的团队，将该技术延伸至全软件工程流程中。最后，本文将分享英国数字服务局（UK Digital Services）如何从初始困境出发，实现高质量、低成本且快速迭代的软件交付。