What was the name of the inflatable module attached to the International Space Station in 2016?

The inflatable module attached to the International Space Station in 2016 was the Bigelow Expandable Activity Module, usually called BEAM. Bigelow Aerospace developed it to test expandable habitat technology in orbit.

SpaceX launched BEAM inside the unpressurized trunk of a Dragon spacecraft during the eighth Commercial Resupply Services mission on 8 April 2016. The station’s robotic arm installed it on the Tranquility module, and it was then expanded and pressurized.

Unlike a conventional rigid module, BEAM was launched in a compact configuration and expanded after reaching orbit. Its flexible layers were designed to provide structural support and protection from micrometeoroids and some space radiation.

BEAM was a technology demonstrator, not a permanent independent space station. NASA extended its planned test period after the module performed well, and it remained attached to the ISS for years.