Anheuser-Busch InBev announced Tuesday that it had reached a $106 billion deal to acquire SABMiller, creating a behemoth that would control nearly a third of the world’s beer supply.

The acquisition, which was agreed to after several failed offers over the past few years, would make it the fourth-largest takeover in corporate history.

Anheuser-Busch InBev, based in Belgium, owns a handful of the world’s most famous beer brands, including Bud Light — which accounts for one in every five beers sold in the United States — Corona, Stella Artois, Beck’s and Modelo.

London-based SABMiller, meanwhile, sells a number of well-known drinks, too, including Castle Beer, Miller Lite and Miller Genuine Draft. The company also has found success with a selection of more localized beers, such as Aguila and Poker, which are popular in parts of Latin America.

Together, the combined reach after the pending deal would be like nothing seen before in the industry – the two companies together would generate about $64 billion in revenue annually. And for that reason, there has been some apprehension regarding what that kind of power could mean for beer markets around the world and in the United States, where the two companies control more than 70 percent of sales.

But some analysts say there is reason to believe this deal has more to do with synergies across the world than it does with exerting power over any single market.

“I keep hearing people talk about how this is going to affect the U.S. market, but there will be virtually no impact at all,” said Mike Mazzoni, a senior partner at Seema International and longtime beer industry veteran. “Things will literally be just as they were before.”

The expectation, according to Mazzoni and others in the industry, is that Anheuser-Busch InBev will have to sell its ownership stakes in companies such as MillerCoors to gain the approval of antitrust officials. As a result, familiar brands such as Miller Lite and Coors Light could end up in the hands of a third party.

“I’m told Molson Coors, which operates globally . . . and sells Molson and Coors, is the likeliest buyer,” Mazzoni said.

Gene Kimmelman, president of Public Knowledge and a former top U.S. antitrust official, says the buyer probably will have to be large, so Molson Coors would make perfect sense.

“This comes at a time when the antitrust agency has been very aggressive and forceful in the United States,” he said. “They’re not only going to have to find a buyer, but also, I think, look for some other substantial entity that can run MillerCoors that’s big enough to replace Anheuser-Busch InBev without hurting competition or driving up prices.”

The truth is that this deal is much more about filling holes than anything else. Expansion has long been well within Anheuser-Busch InBev’s vocabulary – the beermaker, which controls more than 20 percent of the global beer market, has achieved some of the highest margins in the industry by scaling its business to cut costs, and often by way of big buyouts.

Look no further than the company’s name – Anheuser-Busch InBev – for evidence of the company’s merger driven growth. Brazil’s AmBev and Belgium’s Interbrew combined in 2004 to become the world’s largest beermaker; just four years later, in 2008, the newly formed company gobbled up American beer giant Anheuser-Busch.

SABMiller, by comparison, has built its business by establishing successful local brands, largely in markets yet untapped by Anheuser-Busch InBev.

The merger could also have downsides, other analysts said, that might be hard for consumers to notice right away.

The acquisition of SABMiller could eventually mean a more heterogeneous beer selection around the world, for instance. It won’t be long, after all, before Anheuser-Busch InBev looks to spread its big money-making brands – think Bud Light and Corona – to places where other, smaller, locally produced beers have historically sold well.

Joe Thomspon, president of industry consultancy Independent Beverage Group, said it might also work in the opposite direction as well. “We might soon see some of these local brands all over the world, thanks to the reach of their marketing and distribution power.”

News of the deal pushed Anheuser-Busch’s stock higher by 2 percent on the New York Stock Exchange. SABMilller shares rose by nearly 8.5 percent on the London Stock Exchange.

Reuters contributed to this report.