The purpose of e-Informatica Software Engineering Journal is to publish original and significant results in all areas of software engineering research. The scope of e-Informatica Software Engineering Journal includes methodologies, practices, architectures, technologies and tools used in processes along the software development lifecycle, but particular stress is laid on empirical evaluation using well chosen statistical and data science methods. e-Informatica Software Engineering Journal is published online and in hard copy form. The on-line version is from the beginning published as a gratis, no authorship fees, open access journal, which means it is available at no charge to the public. The printed version of the journal is the primary (reference) one.