DevOps is mostly ambiguous because it refers to the entire industry. Its original intent was to create a culture and attitude within businesses that merged the conventional Developer and Operations divisions.
Yes, even though most organizations wouldn't refer to it as DevOps work on such a small scale, you are essentially performing DevOps work if you're provisioning your own infrastructure on AWS and delivering your own software. Since DevOps is a culture, the majority of those with dev or ops titles ought to be engaged in DevOps.