On Tuesday, Amazon Studios got a major boost of Hollywood prestige when Manchester by the Sea was nominated for a best picture Oscar. The Kenneth Lonergan drama, starring Casey Affleck, also picked up a slew of additional nominations, solidifying the film as one of the year’s biggest awards season contenders.

Its success proves that careful Sundance Film Festival purchases can pay off—in a big way. Amazon bought the rights to Manchester about a year ago for $10 million, securing the project after a fierce bidding war. It’s a formula Amazon seems keen to repeat this year: the retailer recently picked up the rights to The Big Sick, a hotly anticipated romantic dramedy starring Kumail Nanjiani and produced by Judd Apatow. It entered a heated bidding war with several other studios, ultimately shelling out a massive $12 million.

One of the studio’s biggest competitors for Sick was Netflix, another of the biggest buyers at this year’s festival. As both studios fight for awards season accolades—and triumph over traditional theatrical distributors—Sundance has become quite the fertile battleground.

While Amazon has opted for pricey but strategic films, Netflix is casting a wider net. On Tuesday, the streaming service picked up the anorexia story To the Bone, starring Lily Collins and Keanu Reeves, for $8 million. It also acquired the Jessica Williams romantic comedy The Incredible Jessica James for an undisclosed sum, and the Hulk Hogan vs. Gawker documentary Nobody Speak for $2 million.

The one area where Netflix is really focusing? Documentaries. The streamer also picked up the JonBenet Ramsay doc Casting JonBenet, the environment-centric Chasing Coral, and Joshua: Teenager vs. Superpower, about Chinese activist Joshua Wong. Though Amazon nabbed a best picture Oscar nod first, Netflix has a good strategic reason for shelling out on docs: the streaming service is well-represented in the documentary category at the Academy Awards this year, with 13th, the criminal justice doc directed by Ava DuVernay, and White Helmets, about heroic Syrian civilians, nominated for best documentary and best doc short, respectively. Netflix also nabbed its first Oscar nomination back in 2014 for a documentary, The Square, though it lost the award to 20 Feet from Stardom.

Aside from The Big Sick, Amazon’s other big Sundance purchase this year was also a documentary: The Long Strange Trip, a four-hour Grateful Dead doc produced by Martin Scorsese and directed by Amir Bar-Lev. Amazon snapped it up for $6 million.

This big spending is reflective of last year’s festival, where both streaming platforms were the biggest movie buyers overall (Fox Searchlight‘s outrageously high Birth of a Nation sum notwithstanding). Netflix paid $7 million for the Paul Rudd drama The Fundamentals of Caring in 2016, and bought up several other films for undisclosed sums. Amazon shocked the industry with its Manchester purchase, and picked up five other projects including Love & Friendship and Wiener-Dog.

Though Amazon beat Netflix to getting a best picture nod, Manchester by the Sea isn’t expected to win this year’s most prestigious Oscar—so Netflix still has a chance of getting that glory first. (And make no mistake: it really, really wants to get there first.) If 2018’s future best picture winner is at Sundance, you can expect them to fight for it—and may the best streaming service, or at least the one with the deepest pockets, win.