Solutions for the web can vary greatly. Ranging from web sites, API hosting or client sided apps.
Often several different technologies and external services need to be brought together to reach the goal attained.
These solutions build on various technologies as a base. Most of my web projects lean into one or more of the following tech stacks. Or a combination thereof:
React.js, Next.js, Node.js, TypeScript, JavaScript, HTML, CSS, Tailwind.
C# .NET Core.
Python Data Libraries, SQL.