Great Consulting Company - The best of the big four

Deloitte Consulting is a very big company with solutions to almost all your problems. In our case, we needed a solution to the lack of a document management system and they were able to give us a solution. Now, we have a document system with final versions extended in all the company. We now need a digital signature system and we are seeing if Deloitte is the must suitable company to do so or not.