Any connectivity technology that isn’t dial-up
Broadband internet is almost always much faster that even the fastest dial-up connections, and refers to connection that are always on. This means that there are long lasting connections that don’t need to be established with each use, they’re essentially links that are always present.
Usually out of necessity, if you had an office with more than a few employees, the bandwidth available by a single dialogue connection would quickly be over saturated by just a few users.
By mid 1990s, it had become pretty common for businesses that needed internet access for their employees to use various T-carrier technologies. T-carrier technologies were originally invented by AT&T in order to transmit multiple phone calls over a single link.