Yes, but not if you're serious about getting the highest conversion rate possible. Most B2B businesses have industry specifics that a marketing company would never understand. A digital agency can help you with strategy, posting, automate lead-generation, engage your audience in remarketing and more. However, the best response comments and enquiries is from someone senior within your buisness. A marketing expert can only help you so much, so it's important you're involved and dedicated to the task.