The move comes off the back of 3 Monkeys' work spearheading Microsoft's consumer PR and trade marketing remit. The team also spent two years leading MSA's trade PR.

The agency has also steered Microsoft's consumer activity, including major product launches for Bing, Windows 7 and Windows Phone.

The brief expands the 3 Monkeys social media team portfolio and builds on the campaigns it has executed for Bing UK.

The account will be led by 3 Monkeys associate director Sarah Ogden, and the team will report to Donna Hindson, trade marketing director of Microsoft's A&O division in the UK.

Donna said: "In a dynamic and competitive market, 3 Monkeys has expanded our trade profile over the past year and now we’re keen to work hand in hand with them on our social media activity.

"We want to build on our momentum and further our social presence in the UK and feel 3 Monkeys is an excellent partner to help us do this."

Sarah said: "MSA's unparalleled consumer insights, platforms and digital advertising innovation make this a dream brief. 3 Monkeys' integrated approach will use MSA's social estates and harness its rich data and insights to develop original creative content specific for the UK digital advertising community."