WAN Connectivity Options

Various WAN options differ in technology, bandwidth, and cost. Traditional and modern options include dedicated links and provide permanent connections, but they are often inflexible and costly. Switched links can be circuit-switched, creating a fixed virtual connection, or packet-switched, segmenting data into packets for efficient routing. 

Internet-based links use global internet infrastructure, now secured through VPN technologies, offering cost-effective and common connections using broadband access technologies like fiber, DSL, cable, and wireless, alongside cellular networks and satellite systems. Enterprises increasingly leverage these options for WAN connectivity, emphasizing security and affordability.

When choosing a WAN connection, consider the pros and cons of various technologies. One option is to pick internet-based public connections, which are available, flexible, and cost-effective, while typically secured with VPNs. Alternatively, you can choose nonpublic service provider networks for enhanced security and performance. 

Factors to consider include the number of nodes to interconnect, traffic requirements, and Quality of Service (QoS) demands. For sensitive traffic like voice or video, private dedicated or switched connections are better. Also, you must take into consideration that local availability and operating budget also impact your decision, as WAN costs can be substantial.