RIYADH: Arabian Internet and Telecommunication Co., also known as "solutions by stc", signed a binding deal to buy controlling stake in Egypt"s Giza Systems Co. According to a bourse filing, the Saudi company will buy 89.49 percent of Giza Systems from Inergia Technologies for Information Systems, in addition to 34 of Giza Arabia, a subsidiary of Giza Systems. The deal will be paid for in cash and is worth $158 million, the statement said. It"s subject to approval from the authorities in Saudi Arabia and Egypt, the company added.