Azure DevOps is a cloud-based suite of tools offered by Microsoft for managing the software development lifecycle. It enables organizations to plan, track, and build software projects, as well as collaborate and manage code in the cloud. It includes version control, project management, automated builds, and release management capabilities, as well as cloud integration. It also features an extensive set of analytics and reporting capabilities that enable organizations to gain insights into their software development processes. It is designed to help organizations create, manage, and deploy applications quickly and efficiently, while minimizing errors and risks.
Its framework allows an easy add-on of many modules to extend the functionality of the base and its free and open source code
Discontinued Hudson is now Jenkins
Jira has but a subset. Jira is a bug tracking tool with passable Scrum and Kanban features attached. VSTS is project planning, project management, Scrum planning, job tracking, defect tracking, SCM, build tools, deployment tools, etc.