There are 2 main runs to most installs. The horizontal run is the main run from the Network room to PCs, Network Printers, Servers, Security Cameras and Wireless Access Points.
The standard has changed over time as the demands have increased. We now expect 1gig a second data transfer minimum between the PC and the Switch. Cat 6a has now problem with that, however this requires proper installation practices as well as proper terminations. ICT not only has followed this standards, we are certified.