Eliminate blind spots so you can build and deliver software more rapidly.
Continuous Integration (CI) is a development practice that requires developers to integrate code into a shared repository several times a day. Each check-in is then verified by an automated build, allowing teams to detect problems early.
By integrating regularly, you can detect errors quickly, and locate them more easily.
Because you’re integrating so frequently, there is significantly less back-tracking to discover where things went wrong, so you can spend more time building features.
Continuous Integration is cheap. Not continuously integrating is costly. If you don’t follow a continuous approach, you’ll have longer periods between integrations. This makes it exponentially more difficult to find and fix problems. Such integration problems can easily knock a project off-schedule, or cause it to fail altogether.
Continuous Integration brings multiple benefits to your organization:
“Continuous Integration doesn’t get rid of bugs, but it does make them dramatically easier to find and remove.”
Continuous Integration is backed by several important principles and practices.
Many teams develop rituals around these policies, meaning the teams effectively manage themselves, removing the need to enforce policies from on high.
Continuous Deployment is closely related to Continuous Integration and refers to the release into production of software that passes the automated tests.
Essentially, “it is the practice of releasing every good build to users,” explains Jez Humble, author of Continuous Delivery.
By adopting both Continuous Integration and Continuous Deployment, you not only reduce risks and catch bugs quickly, but also move rapidly to working software.
With low-risk releases, you can quickly adapt to business requirements and user needs. This allows for greater collaboration between ops and delivery, fuelling real change in your organisation, and turning your release process into a business advantage.
After many years of working with customers to construct deployment pipelines, ThoughtWorks developed Go as the first tool designed specifically for the practice of continuous delivery. It automates and streamlines the build-test-release cycle for worry-free, continuous delivery of your product. Go is now open source and free.
Snap lets teams get started with their continuous delivery journey in minutes. Powerful deployment pipelines wrap familiar continuous integration stages to provide fast feedback and control over the deployment process.
by Martin Fowler
by Jez Humble
by Jez Humble and Rolf Rusell