jtbc is a south korean nationwide general cable television network and broadcasting company. it was established on march 21, 2011 and launched on december 1, 2011. jtbc is supported by "joongang ilbo", which is one of the three biggest newspapers published in seoul. jtbc's largest shareholder is joongang media network with 25% of shares. jtbc's corporate identity (ci) is motivated by the rainbow, representing creativity and variety. jtbc is in alliance with other overseas broadcasting companies, including cnn, fox, hbo, bbc, smg, tv asahi, k-channel, al masry, al youm and standard group.