For AI researchers, it is an understanding of what "intelligence" is and the emergence of an autonomous system that surpasses all human capabilities that learns over time.
For most AI labs like OpenAI and their investors, it used to mean an intelligent system that surpasses all human capabilities at economically useful work, then it meant $100B dollars of profits, now it is an IPO.
For Big Tech, it is digital employees and AI data-centers to "streamline" operations.
To everyone else, it is mass job displacement and unemployment.
For GenZ, it is "permanent underclass".
So it depends on who you are talking to and varies. Therefore "AGI" at this point is meaningless.