What factors to consider when choosing an agency to develop an online project?

I've been developing my online business on my own for a long time, but recently I felt that I started to bump in place. I decided that it's time to turn to professionals for help, but I faced a question: what should I really pay attention to when choosing an agency? I want to find a partner who will not just take money, but will show real results. Share your experience, what helped you make the right choice?

In my case, I was looking for an agency that could offer a comprehensive approach. After a long search, I found a great agency through Design Agency. The platform provides an opportunity to compare several agencies and choose the best one according to your criteria. I was satisfied with my choice - the result exceeded all expectations. Good luck in your search!