It's not just the online businesses that need a digital storefront, but also the physical space businesses! And believe that it is increasingly important for companies/businesses to have a strong online presence, with particular emphasis on the website (but not only). Because consumers only consider the companies/brands they can find online, so having a website is an obligation of any business/business. But it is not enough to have a website, you must have "The Website", which represents your brand values and ideas, publicize your products/services and contribute to the loyalty of your target audience.
Built in HTML5, CSS3, and Javascript at the frontend level, and .NET with C# and MS SQL Server to the backend, the website is the online storefront of your business, so you must maintain consistency and respect your brand values.
BUT WHAT IS FRONTEND?
In a simplified way, the frontend represents the site, that is, the user experience interface, be it desktop, mobile or tablet. It is used HTML language (markup language), CSS (style language) and Javascript (language that allows the user to interact with the website contents), which in turn, will give life to the web designer work.
Eg.: images, links, buttons, some text, pop-up windows, among others.
AND THE BACKEND?
While the backend refers to the administrative panel of the website, to your back office/server, which allows you to manage the content, add pages, publish articles on the blog, etc. By standard is composed by:
In Double, we use the .NET language with C# and MS SQL Server in the backend, which in turn allows the website to collect information from a server, online data, and files (later presented in the browser).
After all, it becomes easier to see what the differences between the backend and frontend are, don't you think?