The difference between the two is what happens after development.
What is DevOps?
DevOps is a culture, a state of mind, a way of designing software or infrastructure, and a way of creating and deploying software and applications. Between creation and operations, there is no wall; they operate simultaneously and without silos.
Two other practice fields are focused on DevOps: lean and agile. DevOps is not a company title or role; it is a commitment made to continuous delivery, deployment, and integration by an organization or team. "There are three "ways" that describe the DevOps values, according to Gene Kim, author of The Phoenix Project and The Unicorn Project:
Agile uses a different approach that moves away from planning, sticking to estimated deadlines, and being responsible for a schedule for the whole project. Agile, instead, assumes and welcomes ambiguity. It is based on the idea of reacting to change or dismissing the need for it instead of charging past it. Instead, a transition is viewed as a way to satisfy the customer's needs.
Agile is governed by the Agile Manifesto, in which 12 principles are defined:
1. The top priority is to satisfy the client.
2. Welcoming changing demands, even late in production
3. Regularly offer working apps
4. Business and growth must work together,
5. Building projects around motivated individuals
6. The most powerful and reliable way of communicating information is face-to-face contact.
7. Working software is the principal indicator of performance.
8. Sustainable development is promoted by agile processes
9. Maintain a constant commitment to excellence in technology and good design
10. Simplicity is key
11. From self-organizing teams, the best architectures, specifications, and prototypes emerge
12. Reflecting on work periodically, then tuning and modifying actions
The four core principles of Agile are:
DevOps and agile, despite their similarities, are not the same, and some argue that DevOps is better than agile. It's best to get down to the nuts and bolts to remove the confusion.
Both are methodologies for software development; this is not in question.
Agile has been around for over 20 years, and fairly recently, DevOps came into the picture.
Both belief in the rapid creation of software and their beliefs are focused on how quickly software can be produced without damaging the client or operations.
What occurs after production is the contrast between the two.
In both DevOps and agile, software creation, testing, and deployment occur. After these three steps, pure agile, however, appears to stop. In comparison, DevOps involves processes that occur continuously. Monitoring and software development, therefore, are also continuous.
Separate individuals are responsible for designing, evaluating, and implementing the program in agile environments. The engineering position of DevOps is responsible for everything in DevOps; growth is operations, and progress is operations.
Cost-cutting is more associated with DevOps and agile is more synonymous with lean and waste reduction and concepts such as agile project accounting and minimum viable product (MVP) are important.
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