A digital marketing roadmap is a plan that outlines the specific tactics and strategies a business will use to achieve its digital marketing goals. It should include the following elements:

1. Objectives: Clearly defined goals that align with overall business objectives.

2. Audience: A detailed understanding of the target audience, including demographics, behavior, and pain points.

3. Channels: The specific channels (e.g. social media, email, search engines) that will be used to reach the target audience.

4. Content: The types of content (e.g. blog posts, videos, infographics) that will be created and distributed through the chosen channels.

5. Timeline: A timeline that outlines when specific tactics will be executed.

6. Metrics: A plan for measuring the success of the digital marketing efforts and how to use that data to make informed decisions.

7. Budget: An allocated budget for each tactics.

8. Resources: A list of the resources (people, tools, technology) that will be required to execute the plan.

9. Adjustment: Regularly monitor and adjust the plan based on the performance and feedback.

A digital marketing roadmap is an essential tool for guiding a business's digital marketing efforts and ensuring that they are aligned with overall business goals.