The telecom giant is on an upswing after completing a multi-year strategic reorientation.What a difference a year has made for AT&T (T 0.59%). In November 2023, the stock sank to $15.46, a 52-week low. But on Friday, shares reached a 52-week high of $22.73. The price rise is a reflection of the positive investor attention that AT&T is attracting after its multi-year strategic pivot away from its failed attempt to build an entertainment empire.The stock is up by more than 30% so far this year. But is this a ...