DevOps is not a job title; you cannot hire a “DevOp.” It is not a product; you cannot purchase “DevOps software.” There are teams and organizations that exhibit DevOps culture and practices.
In a DevOps environment, developers and sysadmins share the responsibility for meeting uptime requirements, so much so that both share oncall duties. Developers have a vested interest in making sure that their software can meet the high availability requirements of the site
«The Practice of Cloud Systems Administration», Limoncelli et al.
Devops is a business problem, por Damon Edwards.