Now, we know that DevOps is a contraction of DEVelopment and OPerationS. DevOps is the end-to-end life cycle of a product and is built based on a focus on business needs and shared goals within the organizations.
DevOps = Continuous Delivery + Continuous Integration + Continuous testing + Continuous Deployment
In traditional software development, a product/project has different phases of the Software Development Life Cycle (SDLC). We will not go into too much detail about all the phases but it has phases such as development, integration, and implementation all the way to operation and maintenance. All the phases are siloed and the cycle is expensive and slow. One more problem is that if a client need changes during the development phase, it means you are delivering software that doesn't contain changes, or you need to start the process midway, which will take more time and money.
The Agile model helps to develop software by small iterations, and will adapt client changes...