Development

GitHub is one of the most popular platforms for developers. Millions of developers and companies build, ship, and maintain their software on GitHub. Their platform allows third party websites to use GitHub as registration or login option with just a few clicks. That is the social login and it allows customers to bring their existing social identities and use them to register and log in without creating a new account explicitly. It saves a lot of time for users and makes the life easier as we don't need to remember all those credentials for different websites anymore.

Facebook is very popular social network with millions of users worldwide and the number of active Facebook users growing day by day. Their platform allows third party websites to use Facebook as registration or login option with just a few clicks. That is the social login and it allows customers to bring their existing social identities and use them to register and log in without creating a new account explicitly. It saves a lot of time for users and makes the life easier as we don't need to remember all those credentials for different websites anymore.

Modern web frameworks teach you to take one group of related concepts and split it across multiple places throughout your codebase. Laravel is a robust framework with a big community behind it. Usually it's standard structure is enough for most starting projects.

Building scalable applications, instead, requires a different approach. Have you ever heard from a client to work on controllers or review the models folder? Probably never - they ask you to work on invoicing, clients management or users. These concept groups are called domains.

Google is a popular platform that is commonly used on websites as registration or login option. It allows us to register with our Google account with just a few clicks and skip the process of email validation. It saves us a lot of time and makes the life easier as we don't need to remember all those credentials for different websites anymore.

Composer is an application-level package manager for the PHP programming language that provides a standard format for managing dependencies of PHP software and required libraries. It manages them on a per-project basis, installing them in a directory (e.g. vendor) inside your project.

Unlike compiled languages, in PHP if you make a mistake, the program will crash when the line of code with the mistake is executed. When testing a PHP application, whether manually or automatically, developers spend a lot of their time discovering mistakes that wouldn’t even compile in other languages, leaving less time for testing actual business logic.

An Apache web server can host multiple websites on the SAME server. You do not need separate server machine and Apache for each website. This can be achieved using the concept of Virtual Host or VHost.
Any domain that you want to host on your web server will have a separate entry in Apache configuration file.

Apache or Apache HTTP server is a free and open source web server, developed and maintained by the Apache Software Foundation. It is one of the most popular web servers in the world. Apache allows website developers to serve their content over the web and provides many powerful features that can be extended through additional modules.

Previously, we explored the fundamental concepts and terminology utilized in Domain Driven Design (DDD), as well as the layers that make up its architecture. In this section, we will examine the artifacts employed to integrate these concepts and construct our application, using PHP as an example.

Developing applications that can perform complex tasks can be a challenging process, and it requires careful planning and design. One approach to managing this complexity is to use a Layered Architecture. This architecture separates the application's code into layers, each with a specific responsibility and purpose. These layers are typically organized in a hierarchy, with higher-level layers depending on lower-level layers.