The Lambeth Conferences are decennial assemblies of bishops of the Anglican Communion convened by the Archbishop of Canterbury. The first such conference took place in 1867.
As the Anglican Communion is an international association of autonomous national and regional churches and not a governing body, Lambeth Conferences serve a collaborative and consultative function, expressing "the mind of the communion" on issues of the day. Resolutions which a Lambeth Conference may pass are without legal effect, but they are nonetheless influential.
These conferences form one of the communion's four "Instruments of Communion".
Read more about Lambeth Conferences: Origins, Opposition