The platform that delivers the best results for advertising can vary depending on various factors such as the target audience, campaign objectives, budget, and industry. However, there are a few platforms that consistently perform well for different types of advertising campaigns. Here are three popular platforms along with examples and references:

1. Google Ads (formerly Google AdWords):
Google Ads is a widely used platform that allows advertisers to display their ads on Google search results pages, YouTube, and other websites within the Google Display Network. It offers various ad formats, targeting options, and extensive reach. Google Ads is particularly effective for search engine marketing (SEM) campaigns, where advertisers bid on keywords to display their ads when users search for relevant terms. This platform is great for capturing high-intent users actively searching for products or services. For example, a company selling running shoes can bid on keywords like "best running shoes" to display their ads when users search for these terms.

Reference: Google Ads - https://ads.google.com/

2. Facebook Ads:
Facebook Ads is a powerful platform that allows advertisers to reach a massive audience of over 2.8 billion monthly active users. It offers precise targeting options based on demographics, interests, behaviors, and more. Facebook Ads is particularly effective for businesses targeting specific demographics or running brand awareness campaigns. For example, a fashion brand targeting women aged 18-34 can create highly visual ads showcasing their latest collection and target them to this specific audience.

Reference: Facebook Ads - https://www.facebook.com/business/ads

3. Instagram Ads:
Instagram, owned by Facebook, has become a popular platform for advertising due to its visually appealing nature and massive user base. With over 1 billion monthly active users, Instagram offers various ad formats such as photo ads, video ads, carousel ads, and stories ads. It is particularly effective for businesses in industries such as fashion, beauty, travel, and food, where visual content plays a crucial role. For example, a travel agency can create visually stunning ads showcasing popular destinations and target them to users interested in travel.

Reference: Instagram Ads - https://business.instagram.com/advertising/

It's important to note that the effectiveness of each platform can vary based on your specific goals, audience, and industry. Conducting thorough research, testing different platforms, and analyzing the results will help you determine the best platform for your advertising needs.