Axolo is a tool designed to improve the code review process within teams using GitHub and Slack. It addresses common issues such as poor handling of pull request notifications, lack of a centralized notification center, and manual management of settings for pull requests. Axolo's features include dedicated ephemeral channels for each pull request in Slack, deployment & Github action alerts, the ability to handle settings for pull requests directly within Slack, saving Slack conversation threads as documentation, and providing an overview of a team's current code review status. The tool aims to streamline the code review process and enhance collaboration among engineering teams.