The Unexpected Elegance of I2C: Why Two Wires Still Rule IoT

I2C's 40-year success story proves that elegance beats complexity in engineering: two wires connecting dozens of chips solved a fundamental design challenge that still resonates in IoT hardware today. The protocol's standardization and ease of debugging make it the default choice for engineers optimizing for board space, power consumption, and cost. Rather than being replaced by newer alternatives, I2C has been cemented as the foundation of modern embedded systems design.