This week on Tech Weekly with Aleks Krotoski we hear from one of the most powerful figures in the global digital economy, Sheryl Sandberg, COO of Facebook. Sandberg tells Jemima Kiss about the latest edition of her hugely successful book Lean In and why the tech sector and society needs to facilitate and encourage the ambitions of women. The interview was recorded as part of the Guardian's Women in Leadership events and the podcast includes an extract from the full discussion which is posted as a Tech Weekly Extra exclusive on our Soundcloud account. Click here to listen in full.

Aleks is also joined by Juliette Garside to discuss the decision by Weibo and other Chinese tech and e-commerce companies to float on the New York stock exchange.

Finally, we ask the question: has Marisa Mayer turned Yahoo around?