There are several main areas of web development, including:

1. Front-end development: This area of web development focuses on the user interface and user experience of a website or web application. Front-end developers use programming languages such as HTML, CSS, and JavaScript to create the visual and interactive elements of a website or web application.
2. Back-end development: This area of web development focuses on the server-side of a website or web application. Back-end developers use programming languages such as Python, Ruby, and Java to create the logic and functionality of a website or web application.
3. Full-stack development: This area of web development encompasses both front-end and back-end development. Full-stack developers have knowledge and expertise in both the front-end and back-end of web development and are able to work on both sides of a website or web application.
4. DevOps: This area of web development focuses on the processes and tools used to manage and maintain a website or web application. DevOps engineers use technologies such as containers, automation, and monitoring to ensure the website or web application is running smoothly and efficiently.
5. E-commerce: This area of web development focuses on creating online stores and marketplaces. E-commerce developers use web technologies and frameworks such as Magento, Shopify, and WooCommerce to create online stores and marketplaces.
6. Progressive web apps (PWA): This area of web development focuses on creating web applications that look and feel like native mobile apps. PWAs are web-based apps that can be accessed through a browser and don’t require installation.

Each of these areas of web development has its own unique set of challenges and opportunities. Front-end development is more focused on creating an interactive and visually appealing user interface while back-end development is focused on creating the functionality of the web application or website. Full-stack development allows the developer to understand and work on the entire web application, while DevOps focus on the maintenance and scaling of the website or web application. E-commerce development is focused on creating online store and marketplaces and PWAs are focused on creating web apps that look and feel like native mobile apps.