What was the name of the speculative boom and crash in technology shares around 2000?

The speculative boom and crash in technology shares around 2000 was the dot-com bubble.

Investors poured money into internet companies during the late 1990s, often valuing businesses on expected future growth rather than profits or established revenue. The Nasdaq Composite, heavily weighted toward technology companies, rose rapidly and reached a peak on March 10, 2000. Many newly listed firms had business models built around attracting users before finding a sustainable way to earn money.

After the peak, technology shares fell sharply. The Nasdaq ultimately lost about 78 percent of its value from its March 2000 peak to its October 2002 low. The crash did not make the internet unimportant; instead, it removed many overvalued companies and left stronger firms to develop. Not every internet company failed.