Question

the primary differences between a traditional SDLC approach and each of the following development methods.

Secure SDLC (SSDLC)

Software Testing Life Cycle (STLC)

Secure Agile

Secure RAD

Answer 1

** Difference between Traditional SDLC and Secure SDLC(SSDLC)

Traditional SDLC- SDLC is academically classified as Software Development life Cycle. SDLC is a process followed for a software project, within a software organization. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software. The life cycle defines a methodology for improving the quality of software and the overall development process.SDLC involves total six phases or steps.

Secure SDLC- The Secure Software Development Life Cycle (SSDLC) incorporates security at every stage. This methodology also includes the use of secure coding techniques. Security isn't only an objective, yet a center idea that is executed into the plan and design of the product at each progression.

Including Security into the SDLC is basic as it remembers little and significant highlights for the product. It's resolved on a nonstop and consistent premise by coordinated efforts between designers, tasks administrators, and security engineers.

** Difference between Traditional SDLC and Software Testing Life Cycle(STLC)

Parameter	SDLC	STLC
Origin	SDLC is mainly related to software development.	STLC is mainly related to software testing.
Objective	The main object of SDLC life cycle is to complete successful development and hesides development other phases like testing is also included.	It focuses only on testing the software.
Coding	The real code is developed, and actual work takes place as per the design documents.	The testing team prepares the test environment and executes them
Goal	Goal of SDLC is to complete successful development of software.	Goal of STLC is to complete successful testing of software.
Maintenance	SDLC phases are completed before the STLC phases.	STLC phases are performed after SDLC phases.
High & Low-Level Design	In SDLC, the development team creates the high and low-level design plans	In STLC, the test analyst creates the Integration Test Plan

** Difference between Traditional SDLC and Secure Agile

parameter	SDLC	Agile
Definition	SDLC is a process which is used to manage a project in a smooth manner.	Agile is an iterative approach and methodology that is used in a SDLC process in Software Project Development.
Usage	It is used to create quality products in an efficient manner.	It is used an incremental development approach to produce quality software product.
Platform	It support any kind of product or software application development.	It supports any type of product by splitting into incremental builds.
Approach	It has different approaches based on methodology.	It has realistic approach in its development.
Managing	It depends on the methodology being followed.	It is easier to manage in Agile model.

** Difference between Traditional SDLC and Secure RAD

Parameter	RAD	Traditional SDLC
Stages	Stages are not well defined in RAD.	Structured Methodology and well-defined stages.
Team Structure	Separate small teams can be assigned to individual modules.	There is no modularisation, a larger team is required for different stages with strictly defined roles.
Testing	Testing is performed at every iteration.	Testing is performed after completion of coding phase.
Efficiency	The use of automated RAD tools and techniques enable faster and easier prototypes which are then used to develop the final product.	Prototyping is difficult and requires more time and effort.
requirements	It is not necessary to know all the requirements beforehand.	All the requirements should be known before starting the project due to rigidity of the models.
Time and Cost Estimation	Short duration projects with small variance in the cost estimation. Low maintenance costs.	Medium to long duration projects with high costs. There are chances for additional increase because of reworking and maintenance costs.

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