The AI infrastructure gold rush just got a whole lot more interesting. Lambda, the data center provider that’s been quietly building its empire of GPU-powered facilities, announced Tuesday it’s walking away with a cool $1.5 billion in fresh funding. And no, that’s not a typo—we’re talking billion with a B.
Leading the charge is TWG Global, a relatively fresh-faced $40 billion investment firm that happens to be the brainchild of two billionaires with very different résumés: Thomas Tull, who used to own Legendary Entertainment (yes, the folks behind your favorite monster movies), and Mark Walter, the Guggenheim Partners founder who apparently likes to diversify between basketball teams and Formula 1 racing.
TWG’s portfolio reads like a billionaire’s fever dream—stakes in the Los Angeles Lakers, the new Cadillac F1 team, and a $15 billion AI fund backed by Abu Dhabi’s Mubadala Capital. They’ve already dipped their toes into the AI waters with investments in partnerships involving Elon Musk’s xAI and Palantir. Now they’re betting big on Lambda.
The Microsoft connection that changes everything
Here’s where things get spicy. Earlier this month, Lambda locked down a multibillion-dollar deal with Microsoft to supply AI infrastructure packed with tens of thousands of Nvidia GPUs. It’s the kind of deal that makes competitors sweat and investors salivate. Even Nvidia itself has skin in the game as a Lambda investor.
Sound familiar? It should. Microsoft pulled a similar move with CoreWeave, Lambda’s main rival in the AI data center arena, dropping about $1 billion on their services in 2024 alone. CoreWeave was riding high as Microsoft’s biggest customer—until OpenAI crashed the party in March with a jaw-dropping $12 billion deal that made everyone else’s contracts look like pocket change.
Lambda positions itself as a CoreWeave competitor, though it’s playing a slightly different game by selling its “AI factories” directly to hyperscaler clouds. Think of it as being both the arms dealer and the mercenary in the AI infrastructure wars.
The rumor mill had been churning for months about Lambda hunting for hundreds of millions at a valuation somewhere north of $4 billion. There was even IPO chatter floating around. But this $1.5 billion raise? That’s not just exceeding expectations—it’s obliterating them. Lambda’s previous Series D in February pulled in $480 million at an estimated $2.5 billion valuation, according to PitchBook.
Whether Lambda’s valuation skyrocketed along with its fundraising haul remains a mystery. The company’s keeping those cards close to the chest, declining to comment on the numbers. But when you’re pulling in that kind of capital after landing Microsoft as a customer, it’s safe to say things are looking pretty good in Lambda’s corner of the AI universe.