All good things must come to an end, but fortunately this ending is just the beginning for businesses. Twitter announced that its self-serve ad platform is coming out of invite-only mode, and starting today, signups are open to all businesses in the U.S.

“Until today it’s been invite only,” Kevin Weil, Twitter’s Senior Director of Product for Revenue, told audiences at TechCrunch Disrupt. “We’ve had brands and agencies and small businesses using the platform, and today we’re opening Twitter Ads to all businesses, every account, every individual.”

Twitter first introduced advertising options in 2010, and expanded to a self-serve platform only last March. Since then, the company has made several improvements to the service, including more targeting and reporting features. More recently, Twitter added an Ads API, enabling you to create more sophisticated campaigns.

Several brands have already demonstrated the power of Twitter’s ad products. LG Ticket Hunter, for example, launched a Twitter exclusive treasure hunt around a Promoted Trend which resulted in more than 50,000 hashtag mentions, 20 million impressions, and just under 12,000 engagements. Similarly, Cirque du Soleil used Promoted Accounts and gained over 360 followers per day.

If you’ve had access to Twitter Ads previously, nothing will change for you.

[Via: TechCrunch, Image credit: Josey]