An efficient and reliable method and system for organizing an application in a source environment and deploying the application into a target environment is disclosed. The method comprises steps of (a) defining an application for creating an application definition containing a list of application components, (b) defining a package according to the application definition for creating a package definition including deployment policies, (c) creating an application package according to the package definition, which contains all the information required to install the application, and (d) installing the application package into the target environment. Preferably, the method may further include a step of defining an environment for creating a configuration definition containing information on the source and target environments. The method may further include steps of transferring the application package from the source environment to the target environment before the application package installing step (d), and validating the installation prior to completion.