May 8 (Reuters) - Ad tech firm Trade Desk reported robust quarterly revenue on Wednesday and forecast second-quarter revenue above estimates helped by resilient demand for its digital advertising services, sending the company's shares up 2.3% in extended trading after hours.

Trade Desk is an ad-buying platform and has a marketplace of over 200 companies - including ESPN, Hulu and Fox - where advertisers can choose to show their ads.

The company offers connected TV (CTV) advertising, which refers to ads that can be served before content or during traditional commercial breaks, on premium content streaming through apps on smart TVs or over-the-top (OTT) devices.

Users are shifting to affordable, ad-supported streaming service offerings in an uncertain economic environment.

It announced plans for a data-driven TV streaming partnership with Roku last month.

Trade Desk forecast revenue of at least $575 million for the second-quarter, above analysts' estimates of $566.6 million, according to LSEG data.

Revenue for the quarter ended March 31 stood at $491.3 million compared with estimates of $480.3 million.

On an adjusted basis, the company, which has partnerships with retailers like Walmart, earned 26 cents per share compared with a profit of 23 cents last year. (Reporting by Juby Babu in Mexico City; Editing by Shailesh Kuber)