When you understand the pain points of the company, you will always perform better in your interview. The reasoning is because you will more easily draw a correlation between your skills and what the company needs. By doing this, you show that you have immense value, ensuring you stand apart from other candidates. If you don't understand the most significant issues that the company is facing, how can you possibly be the best asset for them?
The interviewer may give you an answer such as growing pains, a recent merger, or customer acquisition. Take their response and dig, asking more thoughtful questions such as, 'Which lead generation methods have you used in the past 12 months to attract more customers?'
This timing may not be right to offer up suggestions, but this is an excellent time for you to add a comment regarding your value. For instance, 'I worked for a lead generation and prospecting company for three years and would be happy to teach your team all the valuable methods that I acquired during that time.'