▁these ▁vertical s . ▁During ▁the ▁ 1 9 9 0 s , ▁the ▁company ▁experienced ▁rapid ▁growth ▁through ▁a ▁number ▁of ▁ac quis itions , ▁mer gers ▁and ▁strateg ic ▁al li ances . ▁The ▁company ' s ▁name ▁was ▁changed ▁from ▁T iet ote hd as ▁to ▁T T ▁T iet o ▁in ▁ 1 9 9 5 ▁and ▁T iet o ▁in ▁ 1 9 9 8 . ▁In ▁ 1 9 9 6 , ▁the ▁company ▁strength ened ▁its ▁expos ure ▁in ▁the ▁tele com ▁sector ▁consider ably ▁through ▁the ▁ac quisition ▁of ▁A van cer . ▁In ▁ 1 9 9 9 , ▁T iet o ▁and ▁the ▁Swedish ▁En ator ▁corpor ation ▁merged ▁to ▁form ▁T iet o En ator . ▁ ▁New ▁corpor ate ▁brand ▁and ▁name ▁in ▁ 2 0 0 8 ▁ ▁On ▁ 1 ▁December ▁ 2 0 0 8 , ▁the ▁company ▁re - launch ed ▁the ▁corpor ate ▁brand ▁and ▁market ing ▁name ▁T iet o ▁( which ▁means ▁knowledge ▁in ▁Finn ish ). ▁The ▁official ▁registered ▁name ▁became ▁T iet o ▁Corporation , ▁and ▁the ▁corpor ation ▁is ▁led ▁from ▁its ▁Hels ink i ▁headquarters . ▁Starting ▁from ▁year ▁ 2 0 0 9 , ▁T iet o ▁went ▁with ▁an ▁ag gress ive ▁strategy ▁of ▁off sh ore ▁production , ▁reaching ▁up ▁to ▁the ▁end ▁of ▁the ▁de cade . ▁The ▁President ▁and ▁CE O ▁of ▁T iet o ▁is ▁Kim mo ▁Al k io , ▁as ▁of ▁November