An expanded partnership between Sky and Home Box Office (HBO) will see the firms co-develop and produce original drama series.
The companies have agreed to collaborate on new shows to air on their respective networks in the UK, Ireland and US.
Sky and HBO will jointly fund the commissions, complementing Sky's existing commitment to invest £600 million a year in original British TV content.
As part of the arrangement between Sky and HBO, an extended content output deal has also been signed.
This means Sky Atlantic will remain the exclusive home of first-run HBO programmes in Britain and Ireland until at least the end of the decade.
Popular shows such as 'Game of Thrones', 'Boardwalk Empire' and 'Girls' will continue to receive their UK premieres on the subscription channel.
New HBO series such as 'True Detective' and 'Looking' will also get their first airing on Sky Atlantic in the coming months.
Jeremy Darroch, Sky's Chief Executive, said HBO is "synonymous with must-see TV that pushes creative boundaries".
As such, he said it is "no wonder" that Sky Atlantic is proving such a hit with Sky customers.
"By expanding our relationship with HBO, we are strengthening our commitment to bring customers the very best content from around the world," Mr Darroch stated.
"Original production is the natural next step for our partnership with HBO and we are enormously excited at the prospect of working together to realise our shared vision for epic drama of a truly spectacular scale."
Richard Plepler, Chief Executive of HBO, described Sky as being "a true partner" for his network.
"The extension and expansion of our relationship feels like an obvious next step," he stated.
"We are proud to have HBO programming remain a part of the Sky offering and excited to add to it with our joint undertaking in new production