Positive US macroeconomic conditions will contribute to the first-ever $1 trillion holiday season, but retailers facing a series of headwinds should pay attention to seven key trends that will determine their ultimate success.

Amazon has revolutionized the online marketplace, but that doesn’t mean businesses are only interested in selling on a single platform. Diversification of marketplaces remains a key prospect, and given that each platform has distinct requirements, managing a multichannel ecommerce strategy can be an arduous task.

This follow-up to our Amazon Prime Day 2019 preview report analyzes the post-event results for Amazon and other retailers, and its implications for back-to-school season and beyond.

Last month, Amazon held its fifth annual Prime Day event to honor its Prime members with steep discounts and deals across a range of products and categories. This year’s midsummer shopping event—extended to 48 hours and held on July 15 and 16—racked up record sales, further cementing Amazon’s ecommerce leadership position, while creating incremental opportunities for sellers and competing retailers.

Retail ad budgets continue to grow at a steady pace as retail stalwarts battle disruption from Amazon and other digitally savvy companies.

Despite protests, technical concerns and stiff competition from ecommerce rivals, Amazon managed to hold its most successful Prime Day yet. Though the company did not disclose its sales figures—or how many new Prime members were added—Amazon announced that it sold 175 million items during the two-day event and surpassed its combined sales total from Black Friday and Cyber Monday in 2018.

eMarketer senior forecasting analyst Oscar Orozco breaks down our retail ecommerce numbers for Walmart, Amazon and eBay. Watch now.

Amazon Prime Day has emerged as a massive midsummer shopping event that drives incremental shopping at Amazon and competing retailers while serving as the unofficial lead-in to the back-to-school shopping season.

It may have started as a holiday manufactured by Amazon, but Prime Day has become one of the biggest shopping events of the year. Nearly every major online retailer—including Walmart, Target and eBay—now offers competing sales during the annual July shopping event. For many Prime Day shoppers, the search for the best deals online doesn’t end with Amazon.

Ecommerce sales in France will rise 11.5% in 2019, to €58.84 billion ($69.40 billion), accounting for 9.5% of total retail sales. Sales via mobile devices will post the highest annual growth rate, at 20.6%.

The global ecommerce market will rise more than 20% in 2019, despite mounting economic uncertainty and declining consumer spending growth around the world.

This report provides a regional and country-by-country analysis for retail ecommerce and mcommerce sales in Latin America, with breakouts for Argentina, Brazil, Chile and Mexico. It also examines emerging trends and key drivers fueling regional market movements.

US ecommerce will continue to grow by double digits in 2019 amid a strong economic backdrop that is beginning to moderate compared with prior years.

When looking at the largest US ecommerce sites, eBay is a distant second to Amazon. But as third-party sellers become more prominent on Amazon’s marketplace, many want to expand to other platforms, a possible silver lining for eBay.

Thousands of new shopping apps continue to pop up in Apple’s App Store and the Google Play store each year as consumers gear their shopping habits towards mobile. But the increase in competition might be causing smaller retailers and startups to think twice about investing in app development, especially on the iOS marketplace.

In the latest episode of "Behind the Numbers," eMarketer principal analyst Andrew Lipsman talks about the vast array of visual search tools out there, including eBay's latest entry into the emerging landscape.

This year will be the first time that digital ad spending will account for more than 50% of the total US ad market. The majority of digital ad investments will still go to Google and Facebook, but Amazon is gaining ground.

In the latest episode of "Behind the Numbers," eMarketer principal analyst Andrew Lipsman assesses the significance of eBay’s entry into the grocery delivery space.

2018 was a banner year for US holiday retail sales across both brick-and-mortar and ecommerce. But with more economic uncertainty ahead, the 2019 holiday season is not shaping up to be quite as strong.

Walmart, which overtook Apple last year to become the third-largest US etailer, is widening the gap with Apple. Walmart’s ecommerce sales will grow nearly 33% this year to $27.81 billion.