That share is expected to increase to 54.8% by 2023, with US ad revenues growing at a faster rate than international ad revenues. Looking ahead: Twitter's US ad revenues will continue their flight in the coming years, passing $3 billion in 2023.

Facebook CPMs—the cost per thousand impressions—have increased significantly over the past year as digital ad spending has resurged and advertisers have flocked to the platform, driving more competition into programmatic auctions. On core Facebook (excluding FAN), CPMs rose 47% in Q3 2021 versus Q3 2020—and +33% versus Q3 2019, according to data provided by performance marketing agency Tinuiti.

Facebook’s worldwide ad revenues will pass the $100 billion mark in 2022. That year, for the first time, the platform will account for more than one-quarter (25.3%) of global digital ad spending. Facebook’s US ad revenues will grow by 12.4% in 2020 to $33.48 billion.

What would it take for advertisers to leave Facebook? We posed that question to our analysts and industry sources. Take a sneak peek at our upcoming Facebook advertising forecast as well.

Prior to the pandemic, virtual events were uncommon—72.1% of event and meeting professionals worldwide surveyed by software company Aventri in April 2020 did not have a virtual event strategy before the coronavirus hit. This year forced most marketers to reconceptualize how to execute an in-person event in an online forum. And that pivot is here to stay.

China’s total media ad spending and digital ad spending will both grow at their lowest rates since we began tracking them in 2012, but the ad industry is nonetheless set for an eventful year in the world’s second-largest market.

Our October estimate was created at the beginning of the month, before Amazon reported a 50.5% year-over-year increase in worldwide “other” revenues—the line item that includes primarily advertising revenue—in its Q3 earnings.

Roku is helping Shopify merchants deploy CTV ad campaigns: The move will increase the total addressable market of Roku’s ad platform, while also increasing accessibility for SMBs.

Advertisers aren't confident that their digital ads are working: A shift to digital channels in 2020 coincided with changes to tracking and privacy that have shaken advertiser faith.

International data flows are important to large multinational marketers and marketing platforms. Without an agreement, US companies will continue to face legal jeopardy in Europe—as they will in other countries with data privacy laws, such as Australia and Switzerland—when dealing with international data flows.

Worldwide ad spend soars: Total media ad spending will grow faster than anticipated this year, spurred by strong growth in digital and the rapid economic recoveries seen in countries with vaccine access.