Software Development Life Cycle: Explained

SDLC was conceived in the 1970s as a way of formulating the development of large scale business systems.
There are many methodologies addressing this sequence of stages. Today, we will talk about the phases of SDLC and the methodologies applying them.

0:00 Intro
0:50 SDLC Stages
3:46 Waterfall
4:56 Agile
8:21 DevOps

Read more about SDLC in our blog: https://www.altexsoft.com/whitepapers/estimating-software-engineering-effort-project-and-product-development-approach/ and
https://www.altexsoft.com/blog/business/technical-documentation-in-software-development-types-best-practices-and-tools/

Useful Links:
[ 1 ] https://github.com/tpn/pdfs/blob/master/Managing%20the%20Development%20of%20Large%20Software%20Systems%20-%201970%20(waterfall).pdf

[ 2 ] https://agilemanifesto.org/

[ 3 ] https://agilemodeling.com/essays/barelygoodenough.htm

[ 4 ] https://product.hubspot.com/blog/how-we-deploy-300-times-a-day

[ 5 ] https://blog.spinnaker.io/evolving-how-netflix-builds-maintains-and-operates-their-spinnaker-distribution-33c844d0102c

[ 6 ] https://services.google.com/fh/files/misc/2022_state_of_devops_report.pdf

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38 Comments

@bristolaugura9220 · November 5, 2026 at 12:04 pm

making boring stuff short and sweet. Kudos

@yunanamusadamina · November 5, 2026 at 12:04 pm

❤ Thank you for the clearly explained lecture

@leratomotholo8632 · November 5, 2026 at 12:04 pm

This videos is very informative, learned this three methods in matter of minutes very usefull.🤗

@suzy7065 · November 5, 2026 at 12:04 pm

Bro, this video honestly made everything click for me. Even though I’m a CSE major and had memorized things like the waterfall model etc.. just for exams,I even thought about doing a DevOps course because it’s such a booming field. But now I finally understand what it actually means and why it’s so important.

@WijthaGayan · November 5, 2026 at 12:04 pm

Planning

↓

Requirement Analysis

↓

System Design

↓

Implementation

↓

Testing

↓

Deployment

↓

Maintenance

@petarnikolov9560 · November 5, 2026 at 12:04 pm

How come every creator and discoverer is American or English?🤣🤣🤣

@desislavapopov-21 · November 5, 2026 at 12:04 pm

This video is simply the best!
Good explanation with the best design 🫶🏻

@ArpitaAgrawal-k4j · November 5, 2026 at 12:04 pm

Strange things 🫣

@KingdomHymnPrayers · November 5, 2026 at 12:04 pm

Awesomely detailed. I liked it, thought i was watching some kind of a documentary, good work

@MinecraftWithAlphaeus · November 5, 2026 at 12:04 pm

Excellent video. This helps with my QA learning journey

@AiCodeandCore · November 5, 2026 at 12:04 pm

I liked the comparison at 4:56 between Waterfall and Agile — it helped me see clearly when each model works best. Great explanation for us students who are learning the differences!