SANTA CLARA, Calif.--(BUSINESS WIRE)--Arista Networks, Inc. (NYSE:ANET) today announced the appointment of Ita Brennan to the position of chief financial officer effective immediately. Ita comes to Arista with more than 20 years of financial management expertise in the high technology industry. “Arista is at an exciting junction of cloud networking opportunity and innovation. I am confident that Ita’s credentials will help us scale and guide us into the next phase of profitable growth,” said Ja