What Does Do It Yourself (DIY) Mean?

Do it yourself (DIY) is the process designing, creating or modifying any particular object or product when it is accomplished by an individual, rather than a professional.

Techopedia Explains Do It Yourself (DIY)

Do-it-yourself is a broad term that refers to building or repairing a product independently. In tech, this term refers to a culture of hobbyists who build their own computers and other electronic components.