How long did it take to perfect packet switching technology?

Packet switching technology was developed in the early 1960s, with significant contributions from researchers like Paul Baran and Donald Davies. The concept was refined over several years, culminating in the creation of the ARPANET in 1969, which successfully implemented packet switching for data communication. While the foundational principles were established relatively quickly, ongoing improvements and optimizations continued well into the 1970s and beyond as the technology evolved. Overall, it took about a decade from the initial concepts to practical implementation.