It solves the same problem in almost the same way, but a multi-dimensional vector clock preserves more information than a one-dimensional Lamport clock. For ex

It solves the same problem in almost the same way, but a multi-dimensional vector clock preserves more information than a one-dimensional Lamport clock. For example, Dynamo nodes that receive conflicting changes can compare the vector timestamp of each change to determine their relationship (e.g. find the common ancestor for a three-way merge).