III – CI/CD Pipeline in DevOps

Continuous Integration

It is a software development method where the team members can unite
together for a minimum of one time a day. Here, an automated build to
search tool assesses every small unification or integration with an aim
to find out the errors.

Pros of CI (Continuous Integration)

• Automated monitoring of codebase, code coverage metrics, and code
  quality health
• Low maintenance expenditure and keeps down the technical debts
• Developers get a boost to enhance code quality with publicly-visible
  code quality metrics
• A candid overview of the present scenario of development efforts is
  known with automated end-to-end acceptance tests.
• Lesser risks over a period of time due to the quick feedback
  mechanism
• Tools created to facilitate trace and fix integration and regression
  issues quickly so as to avoid more bugs and ensure fast delivery
• Enables simplification of delivery and amplifies it through
  automation of deployment process. With this in place, the testers and
  end-users get quick access to the software.

Continuous Delivery

CD is a process of software engineering whereby a group of developers
creates software within a short time span to ensure its quick delivery
at a given time.

Pros of CD (Continuous Delivery)

• Lesser Risks: The aim of CD is to develop effortless software
  deployments and make low-risk events that can be performed whenever
  demanded
• Quicker Time to Market: Every integration and test/fix phase
  of the traditional phased software delivery lifecycle takes time more
  than weeks and months.
• Decrease in Costs: The growth of any software product or
  service occurs only after a considerable time span of usage and the
  experience of its results
• Sound Products: CD is inexpensive in terms of working within
  small batches. You can take feedback from its users through the entire
  delivery lifecycle depending on the working software.
• Joyful teams: When the research gets a fair review from
  counterparts and peers, you improve with a continuous delivery that is
  less painful and decreases team burnout.

Continuous Deployment

This is another process of software engineering delivering
functionalities with automatic deployment. The testers get support for
validating the codebase changes and ensuring their correctability and
stability.

CD also can be considered as a step ahead of Continuous delivery
wherein each change in the source code is deployed to production
automatically with no approval needed from a developer.

Pros of CD (Continuous Deployment)

• Software release process automation: CD allows your
  developers’ group to automatically create, test, and make code changes
  for production release in order to deliver the software with speed and
  effectiveness.
• Accelerates Developer Productivity: Your team gains higher
  productivity by making it more independent from doing manual tasks and
  promoting behavior that ensures error reduction and lesser bugs
  deployed to the customers
• Traces and Addresses bugs quickly: Your team gets enabled to
  track and address the bugs quite before they become a big problem
  leading to frequent and aggressive testing. CD also allows flexibility
  to execute extra tests on your code with an intention to automate the
  entire process.
• Quick Delivery of Updates: CD facilitates the team to provide
  regular updates to the customers with speed and frequency. With proper
  implementation, the CD can give you a deployment-ready build artifact
  gone through a rigorous testing process.