Amazon.com on Tuesday became the second publicly traded U.S. company to be valued at more than $1 trillion, as the tech giant expands into new lines of business that are helping turn record profits.

In-car commerce technology that lets people pay for gas, order food and see offers from brands and retailers on the digital dashboards of connected vehicles is giving new meaning to the term “mobile commerce.”

Today’s retailers are facing an uphill battle. Consumer shopping behavior is continuously changing, and among larger retailers like mass merchants, wholesalers or grocery chains, there is fierce competition for shopper loyalty.

Many luxury brands have been too scared of cheapening their high-end image to try ecommerce. The few testing the waters have seen some amazing results.

Businesses in nearly all industries can use Pinterest to some degree. If your product can be photographed, grouped, or if it’s something that gets shared, then it likely has a place on Pinterest. You probably won’t find 1.8 million followers. But your audience could be more genuine and active.

The web was a lot less slick in the mid-90s. Font choices were limited and designers were trying to figure out how best to use the new medium. The Web Design Museum has screenshots of 1990s and early 2000s versions of Amazon, eBay, CNN, Disney, and other sites that look like they were designed by an enthusiastic 13-year-old with a GeoCities account.