1. the best person or place for a certain problem or service
Cian is our go-to guy
A ‘go to is an adjective used to describe a person who is an expert in dealing with a particular issue or problem. It can also be used for places or services. It is an informal expression used in professional and social contexts. This expression is similar to saying 'he's our guy', used to indicate whose role it is to handle a certain responsibility.