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Continuous Delivery vs. Continuous Deployment

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By Fraz Jamil

April 14th, 2017

What’s The Difference Between Continuous Delivery and Continuous Depolyment?

Continuous Delivery and Continuous Deployment are often referred to using the same abbreviation of (CD). In general, technological concepts frequently have very loose definitions that are up to interpretation by the people who are speaking about them. Defining them tends to be difficult, especially at times when both concepts are extremely similar. To enhance your software development process, you will need to understand the difference between Continuous Deployment and Continuous Delivery. iOS development using continuous delivery allows a more agile approach to software development that favors incremental releases.

Continuous Delivery in IOS development is derived from the previous standard, “Application Lifecycle”. The application lifecycle (AMS) was focused on a single, large release instead of consistent small ones. Rather than a simple set of tools, continuous delivery is a concept that emphasizes culture, tools, and processes altogether. The desired result is consistent short-cycle releases of completely usable software.This transition elevated 3 major principles…

  • - Consistent feedback loops must be implemented to ensure that anyone from the development, test or production team will be able to decide if a release is prepared for release to any specific environment.
  • - Maximize automation of the build, test and deploy process. This is intended to expedite the completion rate of building, testing, and deploying software.
  • - Critical to continuous delivery, keeping the software deployable. This is done instead of prioritizing new features and making risky changes, which are instead done slowly through multiple releases over time.

Continuous delivery iOS creates an environment where users can constantly have an up to date, functional version of your software.

Continuous Deployment

This is where things start to get tricky. To some development operations teams, continuous deployment and continuous delivery share the same meaning. To others, they are somewhat different concepts. Some schools of thought even refer to continuous deployment as a “fully automated” pipeline. This would imply that users get access to tested updates immediately in a process that involves little or no human interaction with code. The answer you get widely depends on who you are speaking to and the context of the conversation.

Despite its practicality, using continuous delivery in iOS development is not the “perfect” method. When using continuous delivery methodology, there will be significant pressure to make swift releases while still fixing scripts, reconfiguring servers and updating databases. For many companies, larger ones especially, it is certain that the transition to Continuous Delivery will continue to be a tedious process for some time. Companies which formerly relied on manual scripts to handle the build, deploy, and test phases are now tasked with adopting new procedures. Implementing continuous delivery in iOS development puts stress on a development operations team’s infrastructure and occasionally causes the automation process to bottleneck.

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