Tet (formerly Lattelekom and Lattelecom) is a Latvian internet service provider, telecommunications, technology and entertainment company.

The Tet Group provides IT, telecommunication, and outsourced business process solutions that are provided by the five companies of the group:– SIA Tet, Lattelecom BPO, Citrus Solutions, and Lattelecom Technology, along with its subsidiary Baltic Computer Academy (Latvian: Baltijas Datoru akadēmija, BDA).

Its origins were based on the leftover local infrastructure and services previously operated by the Soviet Ministry of Communications.

Nearly two years later, on December 22, 1993, the Cabinet of Ministers of the Republic of Latvia approved the commission's decision to announce the British and Finnish consortium TILTS Communications as the winner of the tender.

[citation needed] The Latvian fixed telecommunications market is now open to competition, but Lattelecom still has an overwhelming share of the market, and the company is also one of the leading internet service providers in Latvia and is one of the owners of Latvijas Mobilais Telefons, Latvia's largest cell phone operator.

Baltijas Datoru Akadēmija is a training and certification centre providing services to information and communication technology (ICT) professionals and users, whereas Citrus Solutions that is formed through separating the former Network Maintenance Division from the parent company Tet offers integrated network infrastructure construction[clarification needed] and security system solutions[clarification needed].

In 2009 Lattelecom started offering residential fiber optic services with up to 100 megabits per second high Internet bandwidth.

[9] Zolitūde was the first residential area in Riga where the Lattelecom fiber optic Internet service was made available (in January 2009),[10] followed later by Kengarags, Purvciems, Plavnieki, Ziepniekkalns and other locations.

The service is provided using GPON technology that enables 100 megabits per second bandwidth accessible from any connection point (apartment).

It ensures the highest quality data transfer through the Baltic States, Poland and Germany, with an extension to the Russian Federation.

The project for the construction of a united optical fiber infrastructure was implemented by Lattelecom, in cooperation with Deutsche Telekom and MegaFon.

The Baltic Highway will ensure n*10 Gbps data transfer rate (the initial capacity of the system is 40 x 10 Gbit/s), and it will be the geographically shortest route between Germany and Russia.

As of the early part of 2009 and after having won the Ministry of Transport of the Republic of Latvia tender, Lattelecom jointly with the Latvian State Radio and Television Centre (LVRTC) made transition from analogue to digital TV broadcasting system.

In 1994, 49% of the company's stock was sold to two foreign investors, Cable and Wireless and Telecom Finland, which is now part of TeliaSonera.

[22] Television and Internet services accounted for the largest increase in revenue, as the number of subscribers grew rapidly.