Microsoft and HubSpot have contributed to a round that will help the contract and document management platform broaden its customer base.

US-based digital transaction management software provider PandaDoc has raised $15m in a series B round featuring software provider Microsoft and sales and marketing software producer HubSpot.

Rembrandt Venture Partners led the round, which included the multilateral European Bank for Reconstruction and Development, which invested through its EBRD Venture Capital Investment initiative, and Altos Ventures, while Microsoft participated through its Microsoft Ventures unit.

PandaDoc supplues electronic document management software to help companies produce, track, edit and execute contracts and other business documents.…