Digital marketing is a broad term that encompasses all marketing efforts that use digital channels to reach and connect with consumers. This includes everything from search engine optimization (SEO) and social media marketing to pay-per-click (PPC) advertising and email marketing.

Digital marketing is essential for businesses of all sizes in today's digital world. A well-crafted digital marketing strategy can help you reach your target audience, increase brand awareness, drive traffic to your website, and generate leads and sales.

SEO stands for search engine optimization. It is the process of optimizing your website and content so that it ranks higher in search engine results pages (SERPs). SEM stands for search engine marketing. It is a broader term that encompasses SEO as well as paid search advertising, such as PPC ads.

Whether or not you can do digital marketing yourself depends on your skills and experience. If you are new to digital marketing, it is often best to work with an agency to get started. An experienced digital marketing agency can help you develop a comprehensive strategy and implement the necessary tactics to achieve your goals.