What is CI/CD?

That's an excellent follow-up question! Many people get introduced to CI/CD through tools like GitHub Actions, so it's great to understand the core concepts.

CI/CD stands for Continuous Integration and Continuous Delivery (or Continuous Deployment). It's a set of practices in software development that aims to deliver applications to customers frequently by introducing automation into the stages of application development.

Let's break it down:

1. CI: Continuous Integration

   • What it is: This practice involves developers regularly merging their code changes into a central repository (like GitHub). Instead of working in isolation for long periods and merging huge chunks of code at once, developers integrate small, frequent changes.
   • How it works: Each time code is integrated, an automated build process is triggered. This usually includes:
     • Compiling the code.
     • Running automated tests (unit tests, integration tests, etc.) to immediately detect if the new changes broke anything.
   • Benefit: Catches bugs and integration issues early, making them easier and cheaper to fix. It ensures that the software is always in a working state.

2. CD: Continuous Delivery / Continuous Deployment

   • What it is: This picks up where CI leaves off.
     • Continuous Delivery: Ensures that all code changes are automatically built, tested, and prepared for a release to production. It means you can release new changes to your users at any time after a manual approval.
     • Continuous Deployment: Takes Continuous Delivery a step further. Every change that passes all the automated tests is automatically released to production without any human intervention.
   • How it works: Once the CI pipeline confirms the code is stable, the CD pipeline automates the process of packaging the application, staging it, and potentially deploying it to production environments.
   • Benefit: Faster delivery of new features and bug fixes to users, reduced risk during releases, and more frequent updates.

In summary:

• CI is about getting code into a shared repository frequently and ensuring it works together.
• CD is about automatically preparing that working code for release, and ideally, automatically releasing it.

GitHub Actions is a tool that helps you implement these CI/CD practices by automating these steps right within your code repository!

Feel free to ask if anything is unclear!