Regardless of what you think about Facebook (FB - Get Report) , it is an immovable force in the world of big tech.

The social media giant on Tuesday unveiled Libra, a global payments system based on blockchain technology. When it launches next year, Facebook's gated community of two billion-plus members worldwide will soon have its own currency.

And the world will never be the same.

Many technology companies tout their scale. Netflix (NFLX - Get Report) , Amazon.com (AMZN - Get Report) , Alphabet (GOOGL - Get Report) and Apple (AAPL - Get Report) succeed because managers have been able to cobble together huge, functional platforms filled with mostly happy customers.

This is not easy. Well-heeled competitors have cropped up occasionally. Remember when Amazon tried to fork Google's Android and build its own mobile operating system? How about the time Google managers believed Google+ was an alternative to Facebook, or when Apple thought its social network Ping would be the next big thing?

You have probably forgotten those businesses. They were forgettable.

Facebook is the granddaddy of social media because it has something other platforms can't easily acquire: All of your friends and family. Its global user count sits at roughly 2 billion. That's one-quarter of the world's population, and more than half of the 3.9 billion people with internet access.

That scale makes it one of the most important businesses in the world.

Predictably, Facebook's apps dominate the lists of both Android and iOS downloads, taking four of the top six spots, according to research firm App Annie.

When Huawei, the blacklisted Chinese telecommunications company, lost access to its U.S. hardware vendors, managers claimed they could make do. They even hurriedly announced a new forked version of Android for its highly regarded smartphones.

However, when Facebook officials said Instagram, WhatsApp, Messenger and Facebook apps would no longer come preinstalled, Huawei managers stopped production lines.

This power didn't come easy. Under the leadership of Mark Zuckerberg, its founder and chief executive officer, Facebook took it. The company has digested 92 smaller software competitors since 2007, often quickly shuttering operations, according to a February story in Wired.

Facebook earned a reputation for moving fast and breaking things, a label Zuckerberg embraced.

Libra shatters everything.

Adding a payments system to Facebook businesses creates a new digital system for most of the connected world. It means members will be able to buy products and services, and transfer money across borders with a few swipes and taps. It transforms Facebook into a true living, breathing ecosystem.

It's same blueprint used by Chinese internet giant Tencent (TCEHY) . WeChat, its indispensable social media app, is used by one billion people every day. They pay rent, transfer money, hail taxis, and buy food, even from street vendors. Because almost everyone has a WeChat account connected to their local bank, there is no need for ATMs, paper money or cash registers.

In 2014, Facebook hired David Marcus, then the president of PayPal (PYPL - Get Report) . Zuckerberg began talking about building a WeChat-like platform two years later. The evolution of cryptocurrency was the missing link.

The backbone of Libra is a distributed ledger system based on blockchain technology. However, unlike bitcoin, the New York Times reports, Libra will be directly backed by a basket of government currencies like U.S. dollars or the euro. And to acquire digital coins, holders will need to show some form of government identification.

This means Libra should not be subject to wild price swings, nor attract the legions of speculators (and criminals) who frequent bitcoin trade. By design, Libra is going to be stable.

Management of the digital currency is also going to be independent of Facebook. It will be governed by a Swiss non-profit called the Libra Association, overseen by a consortium of 27 companies including eBay (EBAY - Get Report) , Uber (UBER) , Mastercard (MA - Get Report) , Visa (V - Get Report) , Spotify (SPOT - Get Report) and PayPal.

Bringing in a who's who of online transactions is a genius move. It gives Libra the air of independence. It will also encourage software developers to build new applications on top of the platform, making it more sustainable.

Facebook will distribute digital wallets to its two billion members and then likely make money by offering them ancillary financial services such as lending and investing.

It's easy to see how Libra might really catch on among the underbanked, or in large parts of the developing world where many people don't have bank accounts. It could be a huge new business for Facebook.

Shares trade at 20x forward earnings and 8.9x sales. After climbing 43.7% in 2019, the market capitalization is $526 billion.

While these metrics might seem rich, the business commands 83% of social media advertising sales, and 22% of all digital ad sales. Overall 2018 sales surged 37.6%, to $55.8 billion.

There are ongoing concerns about the company being broken up by antitrust regulators, but the sum of its parts may be worth even more as standalone companies. Analysts speculate that Instagram, for example, may be worth $100 billion on its own given its popularity among teenagers and role in commerce.

Facebook is a formidable business that serious investors should buy on any weakness.

Facebook, Amazon, Alphabet, Apple and MasterCard are holdings in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells these stocks? Learn more now.

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To learn more about Jon Markman's stock picks at the crossroads of culture and technology, check out his daily investment newsletter Strategic Advantage. To learn about Markman's practical research in the short-term timing of market indexes and commodities, check out his daily newsletter Invariant Futures.

The author of this column is editor of Strategic Advantage and owns the following stocks mentioned: Mastercard, Visa, Amazon.com, Alphabet and Netflix