Which of the following is NOT a key component of digital marketing?

Television advertising is not considered a key component of digital marketing because it operates within traditional marketing channels rather than digital platforms. Digital marketing specifically focuses on strategies and practices that utilize online tools and channels to reach and engage audiences.

Search Engine Optimization (SEO), content marketing, and email marketing are all integral parts of digital marketing. SEO aims to improve website visibility in search engine results, content marketing focuses on creating and distributing valuable content to attract and engage a target audience, and email marketing uses electronic mail to communicate with customers and prospects effectively. These elements leverage internet technologies, making them essential components of the digital marketing landscape.

Television advertising, while an effective marketing strategy in its own right, does not fit within the digital realm, as it relies on broadcasting media rather than interactive, internet-based channels.