Web Application Deployment

• Development:Modifying and updating the code, usually in a single-tenant setup or environment like Azure
• Testing:An integrated environment to test for code malfunctions with QA and UAT functionalities
• Staging: A clone identical to production environment in which updates or iterations undergo tests
• Production: Go-live environment where the actual web application is activated for the end-users

However, the above break-up is too conventional and has some drawbacks. With the development of agile and low-code platforms, there is an innovative use of computing resources in the face of code deployments in the form of 'minute' packages. New-age web application deployment experts break the deployment model concerning the ongoing and required test runs as part of QA and testing. Rather a four-tier model, the testing iterations individually identify as different phases in application deployment.

Architecture-Driven Deployment:

to understand and In leverage web deployment terms of architecture, the web application code classifies into two portions:

Client-side code:Static files that form the front-end or the UI code. Users download and execute these files through the client-end. These pieces of code are permanent, and won’t modify during the application shelf-life.

Server-side code:The business logic of the entire application resides here. This chunk of the code runs on a virtual server –such as an EC2 instance in localized development scenarios.

Web App Deployment Roadmap

A typical web application deployment process consists of several key phases. An intuitive approach to completing these steps in a synchronized fashion dictates potential deployment success.

• 1. Set up Virtual Machine and Backend:

  Pull the desired code from GitHub into the virtual machine, and deploy code from Express.js (or whatever relevant environment) on an EC2 configuration. Run the server and streamline port requests.

• 2. Deploy the Front-End:

  Store all the files on localized instance - at an IP address the server can ping. With the help of – say Nginx or Apache – the web server fulfills the request to download code from the original destination and runs the same on a browser.

• 3. Streamline Data Transfer:

  To make data movements viable between the client and the server, developers include the relevant headers when generating a request from the front-end. For instance, deployment experts might either append the headers into Nginx - or utilize the cors npm utility.

• 4. Assigning Domain Name:

  The newly deployed and tested application is not complete without a uniquely identifiable domain name. It is recommended to buy or rent a domain name and point to the relevant EC2 instance.

Web App Deployment Strategy

While chalking out a web application deployment strategy, experts often strike the perfect balance between resource utilization and ideal turnaround time. Our DevOps expertise combined with deployment focuses on key metrics such as the number of cosmic errors, Source Lines of Code (SLOC), Change Failure Rate, Defect Escape Rate and the effectiveness of applying patches in a post-deployment scenario. It effectively helps plan and implement long-term deployments at scale.