Shares of the British firm surged about 15% to 504.1 pence by 0855 GMT, becoming the biggest gainer on the FTSE mid-cap index.

As part of the collaboration, Micro Focus has issued warrants to Amazon.com to subscribe for up to 15.9 million ordinary shares in the company at 446.6 pence per share.

Micro Focus' deal with Amazon Web Services comes soon after it re-instated its dividend, while making "solid progress" in the first year of its three-year turnaround plan.

(Reporting by Tanishaa Nadkar in Bengaluru; Editing by Anil D'Silva)