In the registrar's panel, I have set up a redirection record that directs all requests made to *.example.com, example.com and www.example.com to the IP address of my Amazon instance.
This means that I no longer need to configure anything at the registrar or create any subdomains. However, I can still configure nginx to serve different sites for different requests. For instance, if someone requests blah.example.com, nginx can redirect them to one site, while example.com and www.example.com can be directed to another.
Furthermore, if you wish to combine example.com and www.example.com, you can do so by configuring nginx to redirect all requests made to www.example.com to example.com instead. This will ensure that both URLs lead to a single website.
What is your definition of "merge"?
To set up nginx, you can create two separate sites: one that includes both example.com and www.example.com in the server_name directive, and another for blah.example.com. This should take care of everything.
Subdomains have their advantages, such as the ability to optimize pages for regional queries with low and medium-frequency. Additionally, having a regional version of a website can improve its structure by highlighting thematic sections, and provide visitors with direct links to regional offices, promoting trust in the audience.
However, subdomains also have significant drawbacks. Firstly, it can result in the reference mass being distributed across all regional subdomains, which can be detrimental to SEO efforts. Secondly, creating additional content for regional versions of the site can increase budget. Finally, the costs of technical support, SEO, and maintenance of regional domains may also increase.
By directing all requests made to *.example.com, example.com, and www.example.com to the IP address of the Amazon instance at the registrar level, you've significantly minimized the need for ongoing configuration adjustments and subdomain creation. This simplifies the domain management process and centralizes the redirection logic, making it easier to maintain and update in the future.
The use of nginx as the web server further enhances the flexibility and customization capabilities of the setup. By configuring specific server blocks for each subdomain, you can effectively serve different content or applications based on the incoming request. For example, requests to blah.example.com can be directed to a specific site, while example.com and www.example.com can be served from a different location. This level of granularity in content delivery allows for a tailored user experience and ensures that visitors are directed to the most relevant information based on their requested subdomain.
Additionally, the ability to redirect all requests made to www.example.com to example.com through nginx configuration offers the advantage of consolidating the website's presence under a single domain. This not only simplifies the user experience by ensuring that both URLs lead to the same website but also eliminates potential duplicate content issues, which can impact search engine optimization efforts.
This setup optimizes resource allocation and traffic routing, ultimately leading to improved performance and user satisfaction. The centralized control over domain redirection, combined with the customization capabilities of nginx, creates a robust infrastructure for efficiently managing and delivering content across different subdomains of the example.com domain. This aligns with best practices for hosting and web server configuration, contributing to an enhanced overall web presence and user engagement.