Programmatic advertising is a way to buy and sell advertising space on websites and apps using software. It's a way to make the process more efficient and effective for both advertisers and publishers.

Here are some key points to understand about programmatic advertising:

• Advertisers use programmatic advertising to target specific audiences with their ads. They can use data such as demographics, browsing history, and other information to make sure their ads are seen by the people most likely to be interested in them.

• Publishers use programmatic advertising to sell ad space on their websites and apps. They can use the software to set the price for the ad space, and to make sure the right ads are shown to the right audience.

• Programmatic advertising can be done through real-time bidding, where advertisers bid on ad space in real-time, or through private marketplaces, where advertisers and publishers work together directly.

Examples of programmatic advertising include:

• An advertiser wants to show an ad for a new running shoe to people who have recently searched for running shoes online. The advertiser uses programmatic advertising to target those people with their ad when they visit websites or apps that sell running shoes.

• A publisher has a website about cooking and wants to sell ad space to advertisers who sell kitchen appliances. The publisher uses programmatic advertising to make sure the ads for kitchen appliances are shown to the people who visit the cooking website.

In conclusion, programmatic advertising is a way for advertisers and publishers to reach their target audiences more effectively and efficiently by using software to buy and sell advertising space. It's a way to make sure the right ads are shown to the right people at the right time, and it's becoming increasingly popular as more and more companies are using it to reach their target audiences.