I've used Jira and Rally in the past, but we're using Digital.ai because it's crucial to our clients. Agility can scale from traditional agile to SAFe. Jira is great, but it's so customizable that you can get into trouble sometimes. At the same time, a lot of companies use Jira. I'm not a flag-waving fan of Jira, but it was the first one in that space, and that's how it got its hold in the market. Today, a lot of other great products have come along. I like Agility's scalability and flexibility. Honestly, I even like Rally better than Jira.

Before using VersionOne we tracked our Agile projects in the traditional fashion using index cards on a board.    

Azure DevOps was used by the development teams but was not adequate to manage the enterprise-level planning exercises.

We previously used Azure DevOps and have a strategy to integrate Agility.ai and Azure DevOps. We would use Agility.ai for enterprise planning in a scaled environment and Azure DevOps would be used on a team level. The integration of the two tools would be used for delivery pipelines.