Charlie Abrahams, European marketing director of Plumtree, told CW360 that Microsoft support helped secure a number of large corporate wins, including Ford, BP, Glaxo SmithKline and Boeing.
"We are currently negotiating a deal with a global company that wanted to see that Plumtree had the backing to deliver," said Abrahams.
"Microsoft helped us enormously in that they were prepared to stand behind us," he continued. "They said that Plumtree was one of their few serious global technology partners and that they had a very close relationship with us"
The incentive for Microsoft is clear. "When a customer deploys Plumtree to such a scale, they are going to buy a lot of Microsoft products," Abrahams claimed.
"If a company buys from IBM or SAP they are probably going to deploy on Unix, so for Microsoft we are a very good ally in terms of winning a space in these large enterprises."
However, a new report by Forrester Research has highlighted a number of problems with the deployment of single source corporate portals - Plumtree's specialist area.
The report claimed that while corporate portal vendors talk up the return on investment potential of deploying a corporate portal, 61% of firms interviewed could not identify the expected or realised return on their portal investments.
Forrester reported that with almost a third of enterprise portal projects involving at least ten departments, few business units would be happy with functionality they receive.