In the agile world, the deployment window will continue to grow narrow and for sure you can’t catch every bug- so, always use the power of both i.e. on-demand (including webhook on every change) and scheduled automation test suite run. On one hand, your on-demand test run will make sure that you get fast feedback (i.e. which change and by whom broke it) and also you will get the complete test coverage. And, on the other hand, your scheduled runs ensure that you get continuous feedback, don't push any broken pieces to the next environment and hence confidence in your code changes especially after the integration with the larger system(s). Keep your builds green (Organically).
A blog about my testing stories where I pen down my thoughts about test automation covering primarily Selenium, Java, Rest Assured, Karate, Maven, TestNG, Postman, newman, Jenkins, Git, Azure DevOps, etc.