Given the large, monolithic legacy nature of our backend, we use a combination of JIRA for feature tracking and each story gets a corresponding functional test

Given the large, monolithic legacy nature of our backend, we use a combination of JIRA for feature tracking and each story gets a corresponding functional test implemented in CucumberJS, with the expectation that once a ticket is closed as complete, it is already part of ‘the test suite’ we run during releases. Occasionally the tests flake, it’s all just webdriver under the hood, so they require maintenance, but to cover the entire codebase with manual tests even if well documented would take days, so this is by far our preferred option.