It amazes me that there's a drive to make deploys as seamless as possible to avoid customer impact, but nobody wants to invest in systems integration testing in

It amazes me that there's a drive to make deploys as seamless as possible to avoid customer impact, but nobody wants to invest in systems integration testing in order to make sure that what they're actually serving is indeed correct. Most of the time, the "acceptance test" is verifying that it renders and the basic behaviors of the page operate as expected. It is insulting to the people and teams that actually spend the time to do what is right.