Difference between Agile and SDLC (original) (raw)

Last Updated : 23 Jul, 2025

In software development, Agile and SDLC (Software Development Life Cycle) are two distinct methodologies. Agile emphasizes iterative development, rapid feedback, and flexibility to adapt to changing requirements, ideal for small-scale projects. SDLC, follows a systematic approach with sequential stages like planning, design, development, testing, and deployment, suitable for projects of any size. While Agile promotes continuous cycles and customer involvement throughout, SDLC ensures clear roles, documentation, and structured delivery, making it easier to manage complex projects with defined milestones and processes.

**What is Agile?

Agile is a well-known development methodology and the best approach for many development teams, especially those looking to create a continuous delivery environment. It focuses on iterative development, short cycles, getting feedback and adapting to the new requirements. Solutions develop through interactions between self-organizing cross-functional teams. Agile is a mindset from the Agile Manifesto which came out in 2001 containing 12 principles and 4 values written by 17 software developers. Mainly it is an approach towards the software development life cycle process.

**Benefits of Agile

• Increased product quality
• Increased development speed
• Better customer satisfaction
• Continuous improvement
• Reduced risks

**What is SDLC?

SDLC (Software Development Life Cycle) is a type of process which is followed by many software organizations. It can be used to develop both software or hardware components. This process ensures that the out products are efficient and high-quality. SDLC comprises planning, defining the requirements, designing the product architecture, building the product, testing, deployment and maintenance. product, testing, deployment and maintenance. SDLC is additionally referred to as Application Development Life Cycle. SDLC has several models with their separate steps. The most popular ones are -

• Waterfall Model
• Iterative Model
• Spiral Model
• V-Model
• Big Bang Model

**Benefits of SDLC :

• Gives clarity to the project development
• Documents big pictures as well as details
• Keeps development systematic
• Provides clear roles and responsibilities to different members
• Decreased project risk

**Similarities between Agile and SDLC

• **Both involve planning: Both Agile and SDLC involve planning at the beginning of the software development process.
• **Both involve testing: Both Agile and SDLC involve testing at various stages of the software development process to ensure that the software meets the desired requirements and specifications.
• **Both involve development: Both Agile and SDLC involve the actual development of software, with a focus on delivering high-quality code.
• **Both involve delivery: Both Agile and SDLC methodologies are focused on delivering a working software product at the end of the development process.
• **Both involve feedback: Both Agile and SDLC methodologies involve feedback from stakeholders throughout the development process to ensure that the software product meets their needs and expectations.
• **Both involve documentation: Both Agile and SDLC methodologies involve documentation of the development process, including requirements, design, and testing.

**Difference between Agile and SDLC