Yahoo! has made a number of changes to its Mail, Messenger and Search results pages in order to improve its service to customers.
Ari Balogh, executive vice president of products and chief technology officer of Yahoo!, said: "The evolution you see today reflects our focus on enabling people to connect with what matters to them most."
He added that there is "much more to come" from the search company and the changes are part of a "renewed focus on providing a more personally relevant online experience" for its users.
Developments this week come after Yahoo! launched a new homepage recently and follows competitor Google's announcement that it is developing a new architecture called Caffeine, which aims to speed up search results.
With Yahoo! Mail, web users can now benefit from a new streamlined design, which makes it easier to manage email folders. There are also a host of new applications - including Flickr and PayPal - which will be available worldwide in the coming months.
New high-quality video calling and an updated language selector are part of the adaptations to Yahoo! Messenger, while the new Yahoo! search engine which is currently being tested offers personally relevant results.
"The test, available randomly to millions worldwide, delivers a differentiated search experience that lets people better explore the things, people and websites that matter to them most," a statement from the firm said.
