The document provides an overview of the software development life cycle (SDLC) including its phases and common methodologies. It discusses the SDLC phases of planning/initiation, constant development, and gateway. Common methodologies covered are waterfall, iterative, agile, and DevOps. Waterfall follows sequential tasks while iterative allows learning from iterations. Agile advocates adaptive planning and evolution. DevOps enables continuous development, testing, integration, deployment and monitoring throughout the development cycle. The presentation concludes with a Q&A section.

1. Presented By:
Mithilesh Singh
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3. Agenda
- SDLC Overview
- Phases
- Common Methodologies
- Q&A

4. Overview

5. Software Development Life Cycle
Software Development Life Cycle (SDLC) is a process used by the software
industry to design, develop and test high quality software that meets or
exceeds customer expectations, reaches completion within times and cost
estimates.

6. SDLC PHASES

7. Software Development Life Cycle

8. Planning/Initiation Phase
Identify
■ Key Stack-holders
■ User Interface
■ User Experience ( Previous if any)
■ Technical Information
■ Non-Functional Specifics
■ Development Environment
■ Software Architecture

9. Constant Development Phase
Can fall down into 2 broader categories :
■ Projects with known Design/Infrastructure
For competitors in market or pre development experience
■ Unique Projects
Need out of box thinking
Need to develop brand new technological/Infrastructural
concept

10. Gateway Phase
After a month working on constant development phase , the development
cycle can be broken down into few sub-phases like
■ Prototype
■ Feasibility Phase
■ Actual Concept Development
In this phase , a decision is taken whether to proceed for further development
with any selected approach or scrap it.
-80-85% Projects dies at this stage.

11. SDLC Challenges

12. ERA

13. ERA

14. Generations

15. ERA

17. Common Methodologies
■ -Waterfall
■ -Iterative
■ -Agile
■ -DevOps

18. Waterfall
Adapted from manufacturing and
construction industries, the waterfall
model’s main distinction is a sequential
list of development tasks. Engineers
accomplish these tasks in a specific
order because each task depends
on deliverable from previous tasks.
This specific order of tasks makes the
waterfall model more rigid.

19. Iterative
Iterative model is the development
of a software system through repeated
cycles (iterations), in smaller portions
at a time (increments).
It allows developers to learn from previous
iterations and make changes to future
iterations.

20. Agile
Agile software development is various approaches to software
development under which requirements and solutions evolve through
the collaborative effort of
self-organizing and cross-functional teams and their customer(s)/end
user(s). It advocates adaptive planning, evolutionary development,
early delivery, and continual improvement, and it encourages rapid and
flexible response to change.

21. Agile

22. DevOps
DevOps is a software development approach
which involves continuous development, continuous
testing, continuous integration, continuous
deployment and continuous monitoring of the
software throughout its development life cycle.
This is exactly the process adopted by all the
top companies to develop high-quality software
and shorter development life cycles, resulting
in greater customer satisfaction, something
that every company wants.

23. DevOps

24. DevOps

25. DevOps Benefits
-Improved collaboration, operational support, & faster fixes
-Increased flexibility, agility and reliability
-Infrastructure security and data protection
-Faster maintenance and upgrades
-Transformation of projects with digitization strategies
-Increase speed, the productivity of a business and IT team

26. DevOps Tools
Continuous Development
Tools : Git, SVN, CVS, Mercurial
CI [ Continuous Integration ]
Tools : Jenkins, TeamCity, Travis
Continuous Testing
Tools : Jenkins , Selenium , TestNG , JUnit
CD [Continuous Deployment]
Tools: Configuration Management Tools – Chef, Puppet, Ansible and
Containerization – Docker, Vagrant
Continuous Montiroing
Tools: Splunk, ELK Stack, Nagios, New Relic

27. Q & A