What is Software-Defined Storage? The concept of software-defined stuff is becoming increasingly popular with software-defined cars and software-defined networking making the news. However, another term that is beginning to rise is software-defined storage, but what exactly is it? What is Software-Defined Storage? After coming across the term for the first time, actually finding out what software-defined storage was not trivial, and it appears that the term “software-defined storage” is a bit of a marketing buzz word similar to IoT. When the term IoT came out, it left me confused as it sounded like a new paradigm of programming and device that somehow existed in their own bubble, but the truth was that IoT devices were simply, wait for it, internet-connected devices.