Isabel Drost-Fromm has published a series of blog posts detailing the testing and quality assurance (QA) processes for Elasticsearch, emphasizing the critical role of testing and QA in maintaining the software's reliability. Her work covers various aspects such as continuous integration, different levels of testing, and the execution of randomized test runs. To provide further insights, she has also authored a comprehensive white paper for readers interested in a more in-depth exploration of these practices.