Twitch have signed a two-year deal with Blizzard that ensures exclusive third-party streaming rights for over twenty of the developer’s premier esports events. On top of licensing its competitions, Blizzard will also reward Twitch Prime customers with in-game content for Overwatch, Hearthstone and Heroes of the Storm.

[perfectpullquote align=”right” cite=”” link=”” color=”” class=”” size=””]Twitch will be the only third-party service to stream Blizzard’s biggest esport competitions.[/perfectpullquote]

Through 2018, Twitch will be the only third-party service to stream some of Blizzard’s biggest esport competitions, including the Heroes of the Storm Global Championship, Hearthstone Championship Tour (including the world championship) and Global Games, the World of Warcraft Arena Championship, the Overwatch APEX League and Premier Series, and the Starcaft II World Championship Series.

Frank Pierce, chief product officer and Blizzard Entertainment co-founder said in a statement:

“We’ve had great experiences and a long history of working with Twitch, and we’re thrilled that this landmark agreement with them will help us bring some of the most exciting esports action in the world to Twitch fans and everyone who follows Blizzard esports.”

Although these events have always been streamed on Twitch, by locking down dozens of the biggest esports events, the Amazon-owned platform has walled off a huge portion of potential competition. Having lost the CS:GO ESL Pro league and ECS League to YouTube, and over 5,500 hours of ESL content to Facebook, Twitch has finally evened the odds in the esports exclusivity arena.

Activision Blizzard acquired the esports tournament company Major League Gaming in 2015, and with this first exclusive licensing deal they will be able to centralize their biggest productions in one place. With the potential for competition-promotional loot for Prime customers, they can also ensure their player base is rewarded for tuning in.