  The growing demand for connected devices and the increase in investments in
the Internet of Things (IoT) sector induce the growth of the market for this
technology. IoT permeates all areas of life of an individual, from smartwatches
to entire home assistants and solutions in different areas. The IoT concept is
gradually increasing all over the globe. IoT projects induce an articulation of
studies in software engineering to prepare the development and operation of
software systems materialized in physical objects and structures interconnected
with embedded software and hosted in clouds. IoT projects have boundaries
between development and operation stages. This study search for evidence in
scientific literature to support these boundaries through Development and
Operations (DevOps) principles. We rely on a Systematic Literature Review to
investigate the relations of DevOps in IoT software systems. As a result, we
identify concepts, characterize the benefits and challenges in the context of
knowledge previously reported in primary studies in the literature. The main
contributions of this paper are: (i) discussion of benefits and challenges for
DevOps in IoT software systems, (ii) identification of tools, concepts, and
programming languages used, and, (iii) perceived pipeline for this kind of
software development.
