It looks as though Microsoft Corp. is moving into a paradigm shift with its move toward a $7 billion acquisition from Nokia to thrust it into the mobile market. Nokia will still remain a company after Microsoft buys the company’s handset business. While Microsoft is acquiring what Nokia is best known for, the Finnish company is holding on to two if its major businesses: networking and mapping. Microsoft has been hoping to take a slice of the mobile market from smartphone moguls Apple and Google, and meanwhile has been partnering with Nokia for three years.