The Second Workshop on Adaptive Technology (WAT 2018) is a development of a 10+ years national event held at University of Sao Paulo (Brazil) called WTA. It aims to provide a proper forum to discuss adaptivity both on theory and application. It is expected the presentation of high-quality, original research covering all aspects of adaptivity, its methodologies, design, analysis, implementation, verification, and case-studies. Original papers that embraces new and emerging research ideas about adaptivity are also welcome.