I love that it is so easy to use (easy deployment of code, tests, etc.).
It also allows for some really nice automation features which has helped us get more done faster than previously possible! We've been using this tool in conjunction with other tools including codecov/coveralls as well - have yet another way we can automate testing while adding value over manual execution alone. There's nothing about bazaar specifically but there are many open-source technologies out there like GoCD or PipelinesCI that do similar things very easily without requiring you build your own workflow system from scratch. Automation around deploying changes across our engineering organization within multiple teams at once; test coverage tracking via coverall / codecovereasely builds when pushing new commits back into master branch.