How to do Continuous Deployment for Modern Apps | Agilitest blog

What is a modern app?

Modern applications are built with modular architectural patterns, serverless operational models, and agile developer processes. They allow you to innovate faster, reduce risk, accelerate time to market, and decrease your total cost of ownership (TCO). One of the ways for a business to iterate and innovate faster is to adopt modern DevOps practices — especially CI / CD. This is another phrase that you have likely come across at a conference or in the media. CI / CD is short for Continuous Integration / Continuous Deployment. In some cases the ‘D’ also stands for ‘Delivery’ but for the purpose of this article, we will go with Deployment. If you have ever wondered how to modernize your app by adopting CD best practices, this article is intended for you.

Draw the balance between agility and reliability

The dream of every developer has been to write code, hit a big red button and then see this code in production. This can be a good or a bad thing. In some ways, this is the most agile any development process can be. Who needs checks and balances, amirite? But this is also a *very* bad thing. Bugs, and errors can crash your application and give your customers a terrible experience. So how do you draw the balance between agility and reliability?

How to succeed with continuous deployment?

The goals for effective continuous deployment are

  • Deploy to production safely without impacting customers
  • Deliver faster by reducing change lead time and change failure rate.

Continuous deployment applied to AWS CodeDeploy

Here’s an example of how AWS CodeDeploy automates your deployments on Amazon ECS. (This assumes you have the prerequisites of an app running on AWS with the relevant IAM permissions and policies.)

Understanding deployment types and configurations

So, you’re managing your deployments with an AppSpec file, that is just the start to an automated deployment. The next step is to determine how to eliminate downtime, and minimize errors to ensure that your customers are not impacted…



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