Method of producing a software product

A computer program product stored on a storage medium produced by a process, performed at least partially by a computer, the process comprising:

• a) defining a functional model of the software product,
• b) designing, based on the functional model, a plurality n of configurations and slices of the software product, a configuration being an entirety or a part of the software product forming an independently testable unit and a slice being a set of functions of the software product constructed together and forming an entirety or a part of a configuration,
• c) constructing, for the first time, a first slice forming a first configuration,
• d) independently constructing, for the first time, second to n-th slices of the software product,
• e) forming a (k+1)-th configuration by integrating a k-th configuration with a (k+1)-th slice to add functionality of a (k+1)-th set of functions, wherein k=1, . . . n−1,
• f) independently testing the first to n-th configuration, where testing of the k-th configuration is performed concurrently with the construction of the (k+1)-th slice of the software product and the forming of the (k+1)-th configuration and testing of the (k+1)-th configuration includes re-testing the entirety of the k-th slice, and
• g) storing the results of the independent testing of the first to n-th configurations.

A storage medium having stored thereon a computer program product produced by the steps, performed at least partially by a computer, of:

• a) defining a functional model of a target software product,
• b) designing, based on the functional model, a plurality n of configurations and slices of the target software product, a configuration being an entirety or a part of the target software product forming an independently testable unit and a slice being a set of functions of the target software product constructed together and forming an entirety or a part of a configuration,
• c) constructing, for the first time, a first slice forming a first configuration,
• d) independently constructing, for the first time, second to n-th slices of the target software product,
• e) forming a (k+1)-th configuration by integrating a k-th configuration with a (k+1)-th slice to add functionality of a (k+1)-th set of functions, wherein k=1, . . . n−1,
• f) independently testing the first to n-th configuration, k-th configuration is performed concurrently with the construction of the (k+1)-th slice of the software product and the forming of the (k+1)-th configuration and testing of the (k+1)-th configuration includes re-testing the entirety of the k-th slice, and
• g) storing the results of the independent testing of the first to n-th configurations.

A computer system comprising an input/output device, a processing device and a storage device having stored thereon a computer program product produced by a process, performed at least partially by a computer, the process comprising:

• a) defining a functional model of the software product,
• b) designing, based on the functional model, a plurality n of configurations and slices of the software product, a configuration being an entirety or a part of the software product forming an independently testable unit and a slice being a set of functions of the software product constructed together and forming an entirety or a part of a configuration,
• c) constructing, for the first time, a first slice forming a first configuration,
• d) independently constructing, for the first time, second to n-th slices of the software product,
• e) forming a (k+1)-th configuration by integrating a k-th configuration with a (k+1)-th slice to add functionality of a (k+1)-th set of functions, wherein k=1, . . . n−1,
• f) independently testing the first to n-th configuration, where testing of the k-th configuration is performed concurrently with the construction of the (k+1)-th slice of the software product and the forming of the (k+1)-th configuration and testing of the (k+1)-th configuration includes re-testing the entirety of the k-th slice, and
• g) storing the results of the independent testing of the first to n-th configurations.