Online streaming services such as Amazon Prime Video and Netflix and are quickly taking over where network and cable television have long held sway.

Within the next four years, experts estimate, online viewing will surpass TV watching.

In fact, some analysts predict that TV sets will become obsolete as soon as the next decade.

It makes sense, then, that advertising dollars should follow this trend.

Next year, digital-ad spending will surpass that for traditional TV ads by more than $5 billion, according to eMarketer.

This is where the big profits will be made, and the hottest digital ads are video. This year, digital-video ad spending is expected to grow by about 28.5%, to $9.84 billion

Social-media companies such as Facebook are latching onto this moneymaking opportunity.

Facebook recently unveiled a video ad marketing brokerage service within its Audience Network platform. The company's first client was fast-food restaurant chain Jack in the Box.

But there is a huge market in this area that has remained untapped.

With the future of advertising in video, even smaller businesses want to take advantage of the trend. However, getting started without the support of a huge corporate infrastructure is more than daunting.

That is where Alphabet (GOOGL) - Get Report subsidiary YouTube comes in. The video-sharing platform, which was started by former PayPal employees in 2005, was purchased by then-Google for $1.65 billion a year later.

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Although major international corporations use YouTube as a video and marketing platform, a large portion of the videos shared on the site have been uploaded by everyday individuals, and that is part of the website's egalitarian appeal.

So it would make sense for YouTube to create an initiative to get small businesses in on the digital-video advertising game.

YouTube said Wednesday that it will send professional filmmakers to assist small-business owners with every step of creating a video ad for free, as long as the small business agrees to spend at least $150 on the site.

The service is available in only six metropolitan areas. However, for small-business owners outside these cities, the site has also rolled out a new application, YouTube Director, to assist with making video ads.

Although these businesses lack the money of the mega-corporations, there is still a massive amount of cash to be made with video advertising. And YouTube will be at the forefront as it operates as one of the best video-marketing platforms on the Internet.

Alphabet has taken on a lot of moon-shot projects in the past year.

But YouTube's latest endeavor is certainly not one of them. Continue to look for even more profits from Alphabet as digital marketing becomes one of the hottest moneymaking segments of the Internet.

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This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.