It can’t be said that YouSendIt hasn’t been remarkably successful in the collaboration space. The popular service has more than 30 million users as of the first quarter of this year, and it counts 98 percent of the Fortune 500 companies as clients.

Today we’ve learned just how extremely keen YouSendIt is to maintain this momentum.  AOL and Yahoo veteran Brad Garlinghouse is taking over as the new chief executive–a Silicon Valley all-star with a knack  for growing companies and the experience to back it up.

Previously Garlinghouse served as the CEO of VoIP giant Dialpad Communications, which has seen its user base take off from just 2 million to 14.5 under his tenure.  The executive also has a track record in the cloud and the as-a-service space from his VC days.

“YouSendIt is a rare gem – it has quietly built the leading business in this space by focusing on execution. Used within a whopping 98% of the Fortune 500 and with more than 30 million registered users – the company is well positioned to continue its dramatic growth,” said Garlinghouse. “YouSendIt has already demonstrated a track record of solid financial growth. I’m proud to lead YouSendIt into this next phase.”

Garlinghouse is replacing Ivan Koon, who spearheaded YouSendIt’s expansion over the course of the past six years. And by the looks of it a change of trajectory may be exactly why the company decided it needs an executive shuffle.

Under its new leadership the cloud provider may start focusing more on its newer cloud initiatives such as Workstream, and more importantly on the way they pertain to YouSendIt’s massive corporate demographic. A partnership with one of Microsoft’s largest resellers last month underscored this very goal, and Garlinghouse might just expand on this angle in the coming months.