But I wouldn't call deep learning a "technology". DL is a branch of mathematics, technology (e.g programming language, ML framework) is secondary, and most important non-mathematical advancements in the field of DL are those in hardware, not in software.
I consider DL to be a technology. Of course there is DL theory, but most people doing DL are engineers. To say that most advancements are in hardware really trivializes the engineering breakthroughs made in computer vision, language understanding, robotics, etc. DL is enabled by better hardware, but it still requires a lot of work.