P2P caching technology, which was filed in 2000. The P2P bandwidth problem In 2008, peer-to-peer traffic was estimated to account for 50% of all Internet traffic, and was expected to quadruple between 2008 and 2013, reaching 3.3 exabytes per month– or the equivalent of 500 million DVDs each month. However, this trend has been discontinued, as by 2016 the global P2P traffic began to lower, showing a 6% descent between 2016 and 2021. These statistics may be explained by the popularization of Video on Demand services, which have (until the moment) used a centralized architecture for data distribution. Increasing P2P traffic has created problems for ISPs. Networks can become saturated with P2P traffic, creating congestion for other types of Internet use. The cost of P2P traffic is disproportionate to the amount of revenue ISPs make from these customers because of the flat-rate packages of bandwidth commonly sold. To prevent P2P traffic from degrading service for all subscribers, ISPs typically face three choices: Invest in additional bandwidth and equipment. Unfortunately, increasing bandwidth often does not solve the problem, because P2P applications inherently tend to consume as much bandwidth as available. Implement stricter byte caps, policies, or P2P traffic-shaping, limiting the speed of P2P traffic. The difficulty is that P2P packets are becoming harder and harder to identify, especially with the introduction of encryption (such as BitTorrent protocol encryption). Traffic shaping can also generate negative publicity and customer reactions. Implement a form of P2P caching. Caching releases the bandwidth demand on critical Internet links and improves the experience for all users – P2P users whose file sharing is improved through using the cache, and non-P2P users who experience better performance from networks un-congested from P2P traffic. The initial adopters of P2P caching have been ISPs in Asia, the Pacific Rim, Latin America, the Caribbean and the Middle East, whose subscribers are heavy users of P2P networks and where providing the additional bandwidth to handle P2P data is very costly due to the expense of international transit links. P2P caching is expected to become an increasingly essential technology for ISPs and MSOs (multiple system operators) worldwide, particularly with the growing popularity of P2P content among broadband subscribers and the adoption of P2P as a content-distribution strategy by mainstream content providers such as the BBC. P2P caching implementations PeerApp UltraBand Media Caching Software Corelli is a community-based P2P caching system that operates in a