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A comprehensive guide to container security

So much of our modern software runs on containers. Containerized applications offer great flexibility for developers, but they also come with security risks. Container security is a holistic approach to managing risk in containerized environments. Securing containers requires a broad approach incorporating different tools and policies that enforce security in the software supply chain, infrastructure, container runtime environments, and other potential container attack surfaces.

What is Behavior-Driven Development (BDD)?

Behavior-Driven Development (BDD) is a software development methodology in which applications are built to match the behaviors a user would expect from the software. An evolution of Test-Driven Development (TDD), BDD gathers user stories about how users expect applications to behave, then creates software tests to validate that their applications match this behavior. The BDD methodology utilizes specific language and naming conventions.

Guide to unit testing

Unit testing is a software testing methodology that tests the behavior of individual functional units of code. Through unit testing, developers can verify that their code performs as intended. Providing an opportunity to catch bugs, validate the implementation of logic, and assess the quality of the code, unit testing enhances the quality of applications and preemptively identifies problems before they become major issues.

Software Development Life Cycle: SDLC phases and best practices

The Software Development Lifecycle (SDLC) is a methodology that provides a structured process for developing high-quality software in a timely and cost-effective manner. The SDLC outlines software development as a series of tasks, creating a management framework focused on efficiency and quality. Software development is a tightly interwoven process that balances costs, deadlines, and capabilities.

Introduction to developer experience: What, why, and how

The core concept of developer experience (or DevEx) is simple: happy developers are more effective developers. Great developer experiences create opportunities for success, while poor DevEx leads to frustration and delays. Though the concept is easy to grasp, real-world developer experiences depend on many complex factors.

Unlocking efficiency with CircleCI's new multi-repo project model

In a traditional CI/CD pipeline, the instructions for how your pipeline should run are stored in the same repository as your application code, creating a rigid 1:1 relationship between your pipeline and project code. This approach has benefits, like keeping pipeline logic close to the code it supports, but it also introduces challenges, especially for organizations managing multiple repositories or microservices.

Calculating the business value of software delivery

For engineering leaders and technology decision-makers, CI/CD metrics have always been more than just operational measurements – they’re direct indicators of developer experience and team productivity. Every failed build, slow pipeline, or delayed deployment directly impacts your developers’ ability to deliver value.

How to use CircleCI Support Center: Submitting tickets and accessing resources

CircleCI Technical Success Manager, Nico, guides you through using the CircleCI Support Center to efficiently resolve issues and access support. Learn how to navigate the Support Center, use the knowledge base, and utilize the AI widget for quick answers. Nico also explains how to submit a support ticket, ensuring it reaches the right team—whether for build issues, billing, or advisory services.

Reduce storage costs on CircleCI: Managing artifact, cache, and workspace retention

In this video, CircleCI’s Technical Success Manager, Adrian, walks you through simple yet effective strategies for managing storage costs on CircleCI. Learn how to adjust retention periods for artifacts, caches, and workspaces to significantly reduce credit usage each month. Adrian covers how to review storage usage in the CircleCI UI, identify high-storage components, and set optimal retention durations. Ideal for teams looking to lower overhead costs on CircleCI while maintaining efficient builds. Start saving credits and optimizing your storage strategy today!