Yahoo CEO Marissa Mayer claims the firm's search deal with Microsoft has not delivered the market share gains it expected.
Speaking at the Goldman Sachs Technology and Internet Conference in San Francisco, Mayer claimed the 10-year partnership has backfired, with Bing taking market share away from Yahoo.
"One of the points of the alliance is that we collectively want to grow share rather than just trading share with each other," Mayer told delegates.
We collectively want to grow share rather than just trading share with each other.
"We need to see monetisation working better because we know that it can and we've seen other competitors in the space illustrate how well it can work," Mayer said of the partnership.
Mayer also claimed Yahoo's biggest challenge is getting more page impressions. The internet giant is set to streamline its mobile apps from 60 to around 12 as it fights to get consumers to spend more time on Yahoo's websites to boost ad revenue.
Yahoo and Microsoft partnered up in 2010 as they thought they would be better positioned to challenge Google's dominance in the search market.
However, two years on, and the deal is yet to make a significant dent in Googles market share.
Google is still the most used search engine in countries such as the UK and US with 89 per cent and 66 per cent market share, respectively.
Despite Microsoft and Yahoo joining forces, the firms still lag behind with a collective share of 28 per cent in the US and 30 per cent in the UK.
