1. A method comprising: in a multi-vendor cloud orchestration system comprising a cloud computing service tool executed by a processor in the system: receiving, by the processor, a computing environment input comprising criteria that specify a computing environment for implementation; assigning, by the processor, an aggregate score to the computing environment input based on a score range for the criteria; determining, by the processor, characteristics of a set of computing resources offered by cloud resource vendors; determining, by the processor, a subset of the set of computing resources responsive to the aggregate score, the subset including resource members that comprise a cross-platform implementation of the computing environment across multiple of the cloud resource vendors; validating, by the processor, the subset of computing resources for inter-compatibility; and searching a template database comprising configuration templates to determine, by the processor, a selected configuration template for provisioning at least one of the resource members.