Testerzy.pl portal is the leading brand of 21CN Group - a modern Software & Testing House. For years, we have been supporting the education of software testers, providing companies with training and testing services, and our best experts collaborate on unique projects for our Partners and Customers. Testerzy.pl is at the same time the largest compendium of testing knowledge in Poland and the latest news from the world of testers. Our mission is to expand knowledge and emphasize the role of the software tester's profession in the awareness of the IT industry. Over the years, we have shown different faces of software testing, including by organizing international conferences such as TestingCup and Automation&Agile Days. We have proven that being a tester is not only a profession, but also a passion and a lifestyle.