The firm depends on its relationship with advertisers. At present its main source of revenue is “promoted” tweets, accounts and trends sold for cash.
A spokeswoman for Twitter said the main goal of the revamp was to make the service more simple and easy to use, rather than to focus on brands.
“If users don’t want to see a brand’s page, then they can just not visit it,” said Rachel Bremer.
The so-called “brand pages” will bring Twitter in line with similar features offered by Facebook and Google+.
A new “discover” feature highlights content from Twitter based on a user’s interests and location, an enhancement of the site’s existing hashtag system.
“We’ve simplified the design to make it easier than ever to follow what you care about, connect with others and discover something new,” the company said in a blog post.
“You’ll see this new design both on Twitter.com and mobile phones, so that you’ll have a familiar experience any time, anywhere.”
The company said an update to its standalone app Tweetdeck would also be made available. Twitter bought the UK-developed tweeting software for £25 million in May.
Twitter said that the upgrade would be rolled out to all users “in the next few weeks”. The new features can be accessed earlier by downloading the firm’s updated mobile app.
Several brands have partnered with Twitter for the launch including Coca-Cola, Disney, Nike and McDonald’s.
The redesign allows companies more customisation over the look of their pages and the ability to show embedded multimedia.