Azure DevOps is the Collection of services for building solutions using DevOps practices.
It is evolved from TFS (Team Foundation Server), through VSTS (Visual Studio Team Services)
The key features that the service delivers are:
- Boards: This helps customers to track their work and progress across the team members.
- Repos: This allows you to manage code repositories and code versioning for your project and their deliverables.
- Pipelines: You can create automated builds and deployment processes for your code and application across multiple environments.
- Artifacts: You can share packages with your team and add the artifacts you created to your ci/cd pipelines with a single click.
- Test plans: This allows us to track the testing progress with manual and exploratory testing tools.
All of those features are combined into azure DevOps.