Network is the way to go if you want to share files and folders from various devices, access the internet, print to multiple printers and stream or video conference - this is a vitally important infrastructure to have in place for any business. There are two ways of getting this right without using a peripheral device such as a flash drive or external hard drive.
This is a totally wireless network (Wi-Fi). That means no more wires or cables that have to be plugged into your devices. Your cell phone can even connect directly so no more connecting your devices and copying the data to your computer or server. This eliminates the use of external devices which may contain viruses or get corrupted.
This is a more secure way of protecting your information as it can only be accessed when you plug the network cable into your device. Then you can create network share folders and put all your data in a safe place which can have access restrictions. This is your most stable and fastest option.