A 12-month contract only makes sense if one side is worried the other will leave.
Traditional agencies lock clients into annual terms because it guarantees revenue regardless of performance. That arrangement works great for the agency. It's a lot less great for the business paying the bill every month whether or not the work is actually moving the needle.
A month-to-month structure flips the incentive back where it belongs. If the work isn't earning its keep, a client can walk. That pressure keeps the quality of the work honest in a way a signed contract never will.
Ready for a partner that has to earn your business every month?