The "Google Doodle" campaign, or rather ongoing initiative, is a unique and creative marketing effort by Google that involves altering the Google logo on the search engine's homepage to commemorate various events, holidays, historical figures, and important milestones. Google Doodles are a form of interactive, artistic, or animated illustrations that replace the standard Google logo temporarily, often linking to informative content about the subject being celebrated.

Here are key details about the Google Doodle campaign:

1. Concept: Google Doodles serve as a way for Google to celebrate and bring attention to significant dates, people, and events. They often feature animations, artwork, and interactive elements that engage users.

2. Diverse Themes: Google Doodles cover a wide range of themes, including holidays (e.g., Christmas, New Year's), historical anniversaries (e.g., the birthday of a famous scientist or artist), cultural celebrations (e.g., Diwali, Lunar New Year), and social issues (e.g., women's rights, environmental awareness).

3. Global Reach: Google Doodles are displayed on the Google homepage in numerous countries around the world. They often reflect local and regional holidays and observances.

4. Interactive Elements: Some Google Doodles are interactive, allowing users to play games, explore stories, or create digital art. These elements encourage user engagement and can be both entertaining and educational.

5. Honoring Icons: Google Doodles have paid tribute to numerous iconic figures from various fields, including science, art, literature, and entertainment. They often feature biographical information and links to further explore the achievements of these individuals.

6. Community Involvement: Google occasionally holds Doodle contests, inviting users to submit their own designs and ideas for future Doodles.

7. Special Series: Google has run special Doodle series, such as "Women's History Month," which highlights the achievements of notable women, and "Google Doodle for Google Earth," which promotes environmental awareness.

8. Awareness Campaigns: Google Doodles have been used to raise awareness about important issues, including public health initiatives, social justice, and humanitarian causes.

9. Educational Value: Many Google Doodles provide educational content, encouraging users to learn more about the subject being celebrated through links to informative articles, videos, and books.

10. Cultural Impact: Google Doodles have become a cultural phenomenon, with people eagerly anticipating each new Doodle and sharing their favorites on social media.

The Google Doodle campaign is a creative and educational initiative that showcases Google's commitment to celebrating diverse cultures, historical events, and influential figures while also engaging and entertaining users. It has become a beloved feature of the Google search engine and a way for Google to contribute to global cultural awareness and education.