Comparison between agile development and Devops

Agile development and DevOps The difference between

Agility and DevOps The main difference between them is ： Agile is a philosophy about how to develop and deliver software , and DevOps Describes how to continuously deploy code by using modern tools and automated processes .

Agile Manifesto

If software developers are agile , Their behavior is consistent with the values and principles defined in the Agile Manifesto .

  Agile Manifesto On 2001 Written and signed by software development leaders , It defines twelve principles and four basic values that agile practitioners must follow , Include ：

• Individuals and interactions are higher than processes and tools
• Working software is better than comprehensive documentation
• Customer cooperation is higher than contract negotiation
• Responding to changes is higher than following the plan

Although the importance of Agile Manifesto to the software development community is self-evident , But its length is very short . Less than in all 500 word .

In addition to insisting that software continuity will be the top priority of agile to customers , The declaration does not provide any concise guidance , Nor does it recommend any specific process that can be followed . This is purely a philosophical exercise .

How to define DevOps？

Compared with agile ,DevOps Defined document . DevOps There is no universally accepted definition .

We don't even know DevOps When did you enter the public dictionary , Although many people point out John Allspaw and Paul Hammond stay 2009 year Velocity Speech at the conference  《 Every day 10+ Deployment ：Flickr Development and operation and maintenance cooperation on 》 Is its beginning . Many people also believe that Gene Kim Of 《 Phoenix plan 》 So is a book DevOps A driving factor for popularization .

Compare	agile development	DevOps
Start time	2001	2007
founder	J John · Kern 、 Martin · Fowler et al	Flickr Of John Allspaw and Paul Hammond as well as Gene Kim Phoenix plan
Highest priority	Continuous software delivery	Continuous software deployment
Founding artifact	Agile Manifesto	《 Every day 10+ Deployment ：Flickr Development and operation and maintenance cooperation on 》
Implementation framework	Scrum、 Kanban 、ScrumBan、 Lean 、XP	CAMS, CALMS, DORA
alternative	Waterfall development model	Development and deployment of shaft mode
Team size	from 10 Small teams with less than people use	As a company wide strategy implementation
Range	Focus on the development of a single application	Company wide software deployment methods

stay 2009 Year of Velocity In the demonstration ,Allspaw and Hammond It describes how their confidence in software testing routines has led to a lot of trust between development and operation , The company has even implemented a process , Code can be automatically deployed to the production environment every day 10 More than once . At that time, such things as automation were considered to be shocking .

since 2009 Since then , Many changes have taken place in the software development industry , but DevOps The cornerstone of is still ：

• Trust and collaboration between development and operation and maintenance teams
• Rely heavily on comprehensive software testing routines
• Integrate modern tools to simplify development and operational tasks
• It can be automatically deployed to production without any human intervention or checkpoints

Agility and DevOps Culture

Although many people argue DevOps What is it , But most definitions include “ Culture ” The word" . This raises a question ： What is culture ？

Generally speaking , Culture can be defined as any group of like-minded people , They use a common set of tools and follow a repeatable process .

essentially , Culture can be summed up in the following three points ：

• people
• technological process
• And the tools they use

DevOps Tools and processes

stay DevOps In the world of , Popular tools used by practitioners include ：

• Git and GitHub
• Docker And the container
• Jenkins other CI Tools
• For choreography Kubernetes
• Chef and Puppet
• Static code analysis
• Terraform
• Public cloud

Using these generated processes is the continuous integration and deployment of code （CI/CD）.

Agility and DevOps What are the similarities ？

be engaged in DevOps What's unique about people in ？

What are the prerequisites for the success of digital transformation ？

This is agility and DevOps Intersection of .

In order to make DevOps Play a role , all DevOps Practitioners must accept agile thinking .

all DevOps Practitioners believe ：

• The automation of manual tasks and the importance of unfinished work
• The importance of working with self-organizing teams of active individuals
• Make continuous delivery of software to customers the highest priority

Each of these points directly maps to one of the twelve principles listed in the Agile Manifesto .

How to combine agility with DevOps Combine ？

DevOps People must be agile .

To implement correctly DevOps,DevOps Practitioners must accept agile thinking .

Agility and DevOps Practitioners not only have a common mode of thinking , And their goals are also very consistent .

DevOps The ultimate goal of the transition is to fully automate the deployment of working code into production . This represents. DevOps Complete enlightenment .

The Agile Manifesto unambiguously States , Its highest priority is to continuously deliver software to customers .

Agility and DevOps We all believe in building software 、 The best way to ensure transparency and promote sustainable development is to put working software in the hands of customers .

Agility and DevOps With exactly the same goal , Let the development and operation teams use modern tools and follow the process , Deliver the software to customers as soon as possible .

Agility and DevOps Similarities and differences

To sum up , Here is DevOps The most common differences and similarities between and agile ：

1. Agile is defined by the Agile Manifesto , and DevOps There is no universally accepted definition

2. DevOps Defines a work culture , Agile is a software development concept

3. The top priority of agile is continuous delivery , and DevOps Is continuous deployment

4. DevOps Insist on the automation of all manual tasks , Agile is about “ Unfinished work ”

5. DevOps Practitioners advocate agile thinking , Agile requires participants to organize and motivate themselves

Agility and DevOps Combination

Agility and DevOps Not conflicting concepts . in fact , The opposite is true .

Have agile thinking and accept DevOps People of different cultures have a common goal , That is to continuously deliver and deploy valuable software to customers .

To implement correctly DevOps, All participants must accept agile thinking . That's the only way , be based on DevOps Digital transformation will succeed .

---

【 notes 】 This article is translated from ： Agile vs DevOps: What’s the difference?