How is the code deployment process carried out in the production system?

The process of deploying code to production typically involves several stages:

1. Build and testing — the code is compiled and undergoes automated tests to ensure there are no errors.
2. Artifact preparation — packages or containers with the application are created.
3. Deployment — artifacts are uploaded to production servers. This can be done manually or through automated tools (CI/CD).
4. Verification and monitoring — after deployment, the application's functionality is checked, and metrics and logs are monitored.

Tools like CI/CD (e.g., Jenkins, GitLab CI, GitHub Actions) are often used to automate the entire process from code commit to its launch in production. The ability to roll back to a previous version in case of issues is important.