Which role involves partnering with companies to fill their digital marketing and advertising needs?

The role that involves partnering with companies to fill their digital marketing and advertising needs is an agency. Agencies are typically organizations that specialize in providing a range of digital marketing services, such as strategy development, content creation, social media management, SEO, and advertising. They work with various clients to design and implement marketing campaigns tailored to those clients' specific goals and objectives.

An agency's expertise allows them to manage multiple clients simultaneously, leveraging their experience and resources to provide effective marketing solutions. This collaboration helps businesses that may not have the in-house capability or personnel to execute comprehensive marketing strategies.

In contrast, in-house roles are focused on internal marketing functions for a single organization, freelancers operate independently and may take on various projects but typically do not work exclusively with a large portfolio of clients as agencies do, and brand ambassadors represent a specific brand or product rather than fill broader marketing needs for multiple clients. Thus, agencies are the go-to entities for companies seeking extensive marketing and advertising support.