We all know about software development life cycle but there is always a common question that in most cases why we ignore SDLC and follow Agile. So it's a very simple question and it has a very simple answer. But before starting i want to clear a doubt you always have between SDLC and Waterfall.

SDLC is a structured approach to the software development and Waterfall is a SDLC model.Waterfall was the first SDLC model to be used widely in software development projects.That's why it is called pioneer of all SDLC process.

Now I guess you can feel those concepts very clearly. Let's jump into our main topic that is why Agile, why not SDLC?

Agile is famous for it's flexibility. It allows making any number of changes at any stage of the project. On the other hand ,SDLC offers a long term planning but agile offers short term planning.That's why Agile is more preferred over SDLC.

If you have any doubts and confusion about SDLC and STLC you can read my article here. SDLC vs STLC

Any kind of suggestions is highly appreciable. Keep learning.