Wide Area Network (WAN) Aggregation, also referred to as Multi-Link Aggregation, and link load balancing, focuses on the Internet facing connections of a business. WAN Aggregation can be deployed as a single-sided, or two-sided solution. WAN Aggregation improves application performance and predictability when facing network congestion. It also improves application reliability by avoiding network failures when a link goes down, or a router fails. WAN Aggregation is generally more affordable and easier to manage than Border Gateway Protocol (BGP), making it a good option for small businesses. It is important to note, even though WAN Aggregation is less expensive than BGP; it is still highly reliable, and provides optimum performance for any size business.