Lo viejo funciona, Juan! A monolithic is enough, almost ever.

It is a common saying: ‘You will need a MVP ready as fast as you can.’
Because you need to test it, to know if there are any users who validates your idea and see if it solves anyone’s problem. However, as a developers, we are always designing a huge architecture for no more than 100 actual users.

I need a landing page with a contact form to input their email and user’s name.

Great!

npm create vite@latest

I will develop a ReactJS project with router, so any case the user writes the URL wrong, I can redirect them to the homepage again. I will split the code into many components. One for the header, the other is the footer, a Main-content wrapping the different sections.
I will need a React Hook Form. For isolating component re-renders, to improve the site’s performance, of course.
To style all this, I will use Tailwind and @gsap/react for animations, so I will be able to finish it faster.

Then, I also need an API in NodeJS to send the email.

1. A POST route for the form,
2. GET route for checking the API’s health.
3. GET default route for index.

I was thinking about using express-xss-sanitizer middleware for security reasons, and Jest for unit testing.
You will have it in two or three weeks.

But we are forgetting the KISS. Where is the love?

KISS rule is Keep it simple s…

Instead of all these files, routes, packages, and repositories. What if we develop a simple HTML with CSS. You can use Tailwind, and GSAP, loading with a CDN if it makes the development faster. But you truly don’t need React for a simple landing page.
You could even try Astro first, or just Vite. But I do believe that a simple HTML file is enough.
You will need a backend to send the email; it is mandatory. In this case, you could look for premade tools to send emails, or serverless such as Lambda in AWS. However, you can do it with a simple PHP file. If you don’t know PHP language, you could ask ChatGPT or GitHub Copilot to make one for you.
With two simple files (one HTML another in PHP), plus a CSS file, you will have the landing running.

Is it the old way to do it? Yes, but it is easier and faster. You will have time to make your micro-service architecture any time later.

The main goal of a developer is to fix any problem as fast as possible. If you can make it cheaper, better :D

You can also do it with no-code apps like Wix, Webflow, Carrd, etc. I know that. However, this post is for developers, not for entrepreneurs. If you are not a developer, you should definitely go to no-code apps. They will make your life easier.

However, what I am trying to debate here, is that we (developers) always think about the first rule: DRY (Don’t Repeat Yourself), but we always forget about the second KISS rule. It is important to balance both.

:D