Google is now showing Promoted Tweets on its realtime search page.
According to Search Engine Land, the deal will allow Twitter to post its Promoted Tweets adverts on Google's realtime search page, which can be accessed from 'Updates' on the left hand side of the screen.
Promoted Tweets allows advertisers to prioritise the visibility of their tweets and use them as an effective marketing mechanism.
The deal marks a first in Google's massive online advertisement empire. Previously, Google has not allowed a third party to run advertisements on its own pages.
Google confirmed that the deal has been made on a revenue sharing basis, but other details have not been disclosed.
The news follows Microsoft’s decision to integrate its Bing search engine with Facebook, allowing users to see things that have been 'liked' by their Facebook friends when they search on Bing. The feature also allows users to search for Facebook friends on the search engine.