The challenges as the head of IT for a major international law firm with 700 attorneys, 1,500 total employees and 20 separate offices around the world aren’t exactly small, but Baker Donelson CIO John D. Green is up to the task – even when that task changes a little every day.9 ways to bend Windows 10 to your willCustomize Windows 10 to your liking, not theirs.READ NOWDifferent parts of Baker Donelson’s sprawling practice have different needs, said Green, who sat down with Network World Tuesday at Riverbed’s Disrupt event in New York. The real estate practice, tax, and patent and trademark practices, among others, have their own software, all of which Donelson has to support.MORE: Riverbed upgrades set sights on the SD-WAN edge, cloud integration“I think I support 275 different applications,” he said. And thanks to Baker Donelson’s huge demand for video conferencing, he does it via a network that has to be carefully managed to bear the strain.The firm, according to Green, has 40 specialist video conferencing rooms, all of which are in near-constant operation for at least five hours a day.“I run more video than CBS,” he joked. “So being able to get the best quality of service out of my network is absolutely critical to make sure that video is crisp and functioning.”Green also told Network World that he’d recently concluded a major initiative that saw the law firm implement a cloud-based document storage and retrieval service called NetDocuments. That’s 15 document data centers consolidated, and 18 million documents that now live in the cloud.Green told Network World that he’s been a Riverbed customer more or less since the vendor started up. That has a lot to do with the large number of different offices he supports, as well as their varying requirements.