The Asia-America Gateway (AAG) is a 20,000-kilometre (12,000 mi) long submarine communications cable system, connecting South-East Asia with the mainland of the United States, across the Pacific Ocean via Guam and Hawaii. 
The cable is capable of delivering up to 2.88 Tbit/s (US-Hawaii & Hong Kong-South East Asia) and 1.92 Tbit/s (Hawaii-Hong Kong). The cable was ready for service on November 10, 2009.
Development of the AAG cable system was funded, at a cost of $500 million USD, by 19 partners: The Authority for Info-Communications Technology Industry of Brunei Darussalam, AT&T (USA), BayanTel (Philippines), Bharti (India), British Telecom Global Network Services (UK), CAT Telecom (Thailand), Telkom Indonesia (Indonesia), ETPI (Philippines), FPT Telecom (Vietnam), Ezecom/Telcotech (Cambodia), Indosat (Indonesia), PLDT (Philippines), Saigon Postal Corporation (Vietnam), StarHub (Singapore), Telekom Malaysia, Telstra (Australia), Telecom New Zealand, Viettel (Vietnam), and the Vietnam Posts and Telecommunications Group. The cable has landing points at the USA, Hawaii, Guam, Philippines, Hong Kong, Malaysia, Singapore, Thailand, Brunei and Vietnam.
The AAG cable is notorious for its frequent breaks and outages since it was made ready for service in late 2009. Most of the outages have been located at the intra-Asia segments between Hong Kong and Singapore, with most problems occurring in the Vietnam section, while the segment between Hong Kong and the Philippines seems to have fewer problems. The segments between the Philippines and the United States are quite stable. Not only Vietnam, but also countries like Cambodia, Thailand, and Malaysia, which currently have fewer alternatives in place to reroute Internet traffic, are prone to severe service disruption when the AAG cable breaks, whereas Hong Kong, Singapore, and the Philippines, which are served by many different intra-Asia cables, are less affected.
On March 10, the cable segment off the coast of Vung Tau, the AAG Cable landing point in Vietnam, was damaged causing severe disruption to international internet services throughout Vietnam and other countries in Southeast Asia. On March 27, the cable was finally repaired, restoring full internet capacity.
Two more cable breaks occurred in the cable segment off Vung Tau on August 6 and August 31, disrupting Internet services in parts of Southeast Asia.
On October 2, a break occurred in the cable segment between Hong Kong and the Philippines. Because the segment forms part of the cable's trunk, rather than a branch, internet services were disrupted throughout Southeast Asia.
On December 20, 2013, the segment off the coast of Vung Tau was again damaged, affecting some 60% of international Internet traffic.
On July 15, 2014 the segment off the coast of Vung Tau was again damaged, and the internet bandwidth to international destinations was disrupted. VNPT's Viet Nam Data Communications Company Deputy Director Nguyen Hong Hai, said that the time that it would take for repairing the cable had not yet been determined. On July 27, the line was finally mended, 3 days earlier than the scheduled date.
On September 15, 2014 a segment of the cable between Vung Tau and Hong Kong was damaged, which was expected to cause network slowdowns in Malaysia, Singapore, Thailand, Brunei, Vietnam, Hong Kong, Guam and the Philippines. In early reports, the cable break was identified as being in the same area as the July 15 incident, off the Vietnamese shoreline near Vung Tau. A representative of Vietnam's FPT Telecom said that this incident was most likely caused by anchors from local ships dragging along the shoreline, and blamed the cable's poor technical design as a factor in the repeated breaks. Later reports contradicted earlier reports of the break being off the coast of Vung Tau, stating instead that section S1I, off the coast of Hong Kong, had ruptured.
Initially expected to be mended within the 20 days of the incident, repairs experienced a setback when a new rupture was found. The new break, 68 km off the coast of Hong Kong, was only 4 km away from the original one. A date of October 3, 2014 was given for full restoration of service, with repair operations continuing until October 5.
On 5 January 2015, the cable was damaged yet again at section S1H which connects Vung Tau and Hong Kong. The Vung Tau station launched a search effort in order to identify the point of fracture. Internet speeds returned to normal once the fault was identified and repaired by 22 January 2015.
The snail-paced Internet speed users in Vietnam have been suffering since Thursday, 23 April 2015 is not brought about by a submarine cable cut as widely thought and it will take three weeks, or a month at worst, for repairs. This is the 2nd time this submarine cable is causing headaches to Vietnamese accessing US and European sites. With the increasing use of YouTube and Facebook, the internet in Vietnam comes to a crawl and "Err-timed out" and "unable to find website" became a common error message when accessing overseas websites.
Another outage occurred on May 26, along with a scheduled maintenance outage in June.
2015 was viewed as one of the most troublesome years for the AAG submarine cable. However, 2017 has now taken over as the year with the most outages for the Asia-American Gateway Internet cable.
The Asia-American Gateway cable underwent maintenance again from 22 June 2016 to 28 June 2016, slowing down internet connections between Southeast Asia and North America. 
On 2 August 2016 the AAG cable snapped again, about 90 km from the South Lantau landing station in Hong Kong. The incident seriously affected the quality of Internet services in Southeast Asia. Repairs were completed on 24 August 2016. 
On 8 January 2017 Vietnam’s internet speed slowed following problems with AAG. The disruption was triggered by a problem off the southern town of Vung Tau.  The issue was resolved on 26 January 2017. 
About 3 weeks later, the second breakdown of the year happened on 18 February at a section between Vietnam and Hong Kong. The cause was unknown and the repairs were completed only 7 weeks later, on April 6. 
Another outage happened on 27 August 2017 after Typhoon Hato & Tropical Storm Pakhar (2017) caused dual cuts on S1 and S2 just off Southern Lantau (SLT) causing traffic transiting Hong Kong and Southeast Asia to Guam to crawl. Two other submarine Internet cables connecting Southeast Asia to the rest of the world (SEA-ME-WE_3 and TGN-Intra Asia) were also affected. The outage severely slowed internet a full month. Repairs were finished on 26 September 2017.
Southeast Asia (mainly Indochina) had good Internet connections with North America restored for 2 weeks only, as the AAG cable section near Vietnam was ruptured for a fifth time in 2017 on 7 November. This time - as the newspaper Việt Nam News reported - "at a cable branch from Ho Chi Minh City", which in fact is at the section off Vung Tau once again. Repairs were scheduled to take place between 28 November and 2 December 2017.  However, due to bad weather, repair was delayed twice, first to between December 14-18 and then again to 'sometime' after December 26, because the repair vessel will first tend to another broken internet cable, SEA-ME-WE_3. 
The November-December outage of AAG cable will be an all-time record, surpassing the almost 7 week long breakdown earlier this year.
2017 is the most troublesome year for the Asia-America Gateway internet cable, so far. In total the connection was - for countries in Southeast Asia - interrupted in 2017 for at least 157 days, or 43% of the year. If only taking into account the last 6 months of 2017, AAG performed even worse with outages for at least 92 days, or more than 50% of the time.