What is succession? What is succession? The act or process of following in order or sequence.A group of people or things arranged or following in order; a sequence: "A succession of one-man stalls offered soft drinks” ( Alec Waugh). See Synonyms at series.The sequence in which one person after another succeeds to a title, throne, dignity, or estate.The right of a person or line of persons to so succeed.The person or line having such a right.The act or process of succeeding to the rights or duties of another.The act or process of becoming entitled as a legal beneficiary to the property of a deceased person.Ecology The gradual and orderly process of ecosystem development brought about by changes in community composition and the production of a climax characteristic of a particular geographic region.