Assessing the credibility of a marketing agency involves several key steps. Firstly, review their portfolio and case studies to evaluate their experience and the results they’ve achieved for other clients. Look for detailed case studies demonstrating a clear understanding of client objectives and how they were met. Client testimonials and reviews can also provide insight into the agency’s reliability and quality of service. Secondly, check their industry reputation. This can be done by looking at awards, certifications, and memberships in professional associations. These often indicate an agency’s commitment to industry standards and continuous improvement.