The article discusses setting up GitLab Slack notifications for self-managed instances in 2023. It presents two alternative solutions - using a third-party tool like Axolo or manually creating the notification integration. Axolo is an out-of-the-box solution that provides seamless integration between GitLab and Slack, improving communication, productivity, and accountability during code reviews. However, it requires a paid subscription for teams with more than five developers. The manual method involves creating a Slack app and generating a GitLab webhook URL to receive notifications from the instance. While this approach offers customization and control, it can be time-consuming and complex. Overall, choosing between these methods depends on factors such as budget, team size, and desired level of customization.