Bangalore: OpTier, a provider of business transaction management software, has secured $47.5 million in series D funding. The proceedings will be used to finance its plans to increase sales and make acquisitions.

Index Ventures, a new investor, led the round. Another new investor, Morgan Stanley, which made the investment through its fixed income division, also participated, as did existing investors Pitango Venture Capital, Carmel Ventures, Lightspeed Venture Partners, Gemini Israel Funds and Cisco Systems, according to Israel Mazin, the company's chief executive.

The company's product CoreFirst tracks business transactions, such as a customer using online banking or making an online purchase, on the application layer and provides real-time information about how well the transactions are running and what is affecting their performance.

"There is nothing in the market that enables managers to track if applications are being completed in real-time," said Bernard Dalle, a partner with Index Ventures, which has been watching OpTier since the company released its first product in 2005.

"We wanted to invest then, but they were raising small amounts of money from existing investors," he said, adding that now the company is being more aggressive with its growth and that gave Index a chance to come in.

OpTier's main competitors are Hewlett Packard, through its acquisition of Mercury Interactive, and to a lesser extent, CA. The firm will be looking over the next year for complementary products in areas such as end-user experience and virtualization management, Mazin said.