In August 2017, Disney announced that it would introduce two subscription streaming services, both built by BamTech. One, focused on sports programming and made available through the ESPN app, would arrive in the spring. The other, centered on movies and television shows from Disney, Pixar, Marvel and Lucasfilm, would debut in late 2019. Based in Manhattan’s Chelsea Market, a former factory for the National Biscuit Company, the 850-employee company has a strong track record — no serious glitches, even when delivering tens of millions of live streams at a time. BamTech also has impressive advertising technology (inserting ads in video based on viewer location) and a strong reputation for attracting and keeping viewers, not to mention billing them. BamTech grew out of Major League Baseball Advanced Media, or Bam for short, which was founded in 2000 as a way to help teams create websites. By 2002, Bam was experimenting with streaming video as a way for out-of-town fans to watch games. Soon, Bam developed technology that attracted outside clients, including the WWE, Fox Sports, PlayStation Vue and Hulu. HBO went to Bam in 2014 after failing to create a reliable stand-alone streaming service on its own. Bam built HBO Now for roughly $50 million, delivering it just in time for the Season 5 premiere of “Game of Thrones,” which went off flawlessly. To stock its own offerings, Disney plans to pull content from other services — Disney, Pixar, Marvel and Lucasfilm movies will eventually disappear from Netflix.