In my experience I have seen an LMS get implemented without any form of testing, this caused a huge customer service issue for the individuals taking the course and the instructors that had to lead this course as well. All systems need to be tested and continuously reviewed. Links do not always stay available if that are not archived accurately and in these reviews these issues can be rectified. It is better to take the time to test and update our material before it is implemented then after or you will spend more working time dealing with the problems that will arise from the issues.