Most modern business websites are built with a short list of languages: HTML and CSS for structure and styling, JavaScript or TypeScript for everything interactive, a framework such as React and Next.js to organise it all, and a hosting platform such as Vercel to run it. That list has not changed much in the last few years, which is good news if you are paying for a site and want it to last.
The choice matters for reasons that have nothing to do with code. It decides how easy it is to find someone to work on the site later, whether the site can connect to your booking system or CRM, whether AI tools can read and change it safely, and whether you can take it with you if you change providers.
This list covers the seven languages and frameworks you are most likely to hear from a developer, in plain terms, with the numbers on how widely each one is used. It ends with what deploying on Vercel actually means, what it costs, and the questions worth asking before you sign off on a build.
1. HTML and CSS: the base every website is built on
HTML is the structure of a page: the headings, paragraphs, images, forms and links. CSS is how it looks: colours, spacing, fonts and how the layout changes on a phone. Every website on the internet uses both, whatever else it is built with. In the 2025 Stack Overflow Developer Survey, 61.9% of developers said they had worked with HTML and CSS in the past year.
- What it is for: the content and appearance of every page a visitor sees.
- Who writes it: every web developer. It is not a specialist skill, so it is never a reason to be locked into one provider.
- What to ask: whether the site is built mobile first, and whether the styling is consistent enough that a new page looks like the rest without extra work.
On its own, HTML and CSS gives you a brochure. Everything that makes a site do something, such as taking a booking or checking a price, needs the next item on this list.
2. JavaScript and TypeScript: the language of the modern web
JavaScript is the only programming language that runs inside every web browser, which makes it the default for anything interactive on a page. It is also the most used language among developers: 66% of respondents to the 2025 Stack Overflow survey had worked with it in the past year, ahead of HTML and CSS, SQL and Python.
TypeScript is JavaScript with type checking added. In practice that means the developer's tools catch a whole class of mistakes before the site is published, rather than a customer finding them. 43.6% of developers in the same survey used TypeScript, and it is the default for most new professional builds.
- What it is for: forms, enquiry flows, calculators, booking widgets, and the logic that connects your site to other systems.
- Why TypeScript over plain JavaScript: fewer bugs reaching customers, and code that a second developer can pick up and understand without the first one in the room.
- What to ask: whether the build is in TypeScript. If a developer says it is not worth it for a business site, ask what happens when someone else has to maintain it.
3. React and Next.js: how modern sites are put together
React is a library for building pages out of reusable pieces: a header, a service card, an enquiry form. Change the piece once and every page that uses it updates. Next.js is a framework built on top of React that adds the parts a real website needs, such as page routing, fast loading, image handling and a way to run code on the server. Next.js is made by Vercel, the hosting platform covered later in this list.
In the 2025 Stack Overflow survey, 44.7% of developers had used React and 20.8% had used Next.js, making React the most used front end library by a wide margin. That matters to a business owner for one reason: it is easy to hire for. A React and Next.js site can be handed to another developer or agency without a rebuild.
- What it is for: the whole visible website, from the home page to the enquiry form, built as one consistent system.
- Why it suits a business site: pages load fast, search engines can read them, and content can come from a database rather than being typed into a page layout.
- Alternatives you may hear: Vue with Nuxt, Svelte with SvelteKit, and Astro. All are good, all run on Vercel, and all are smaller hiring pools than React.
The important shift is that a Next.js site can keep its content as data. A service, a price or an opening hour lives in one place and appears wherever it is needed, including in a quote or an AI assistant. That is what makes a site agentic ready rather than a set of fixed pages.
4. Node.js: the same language on the server
Node.js lets JavaScript and TypeScript run on a server, not just in the browser. That means one language and one team can build both the pages your customers see and the behind the scenes work: saving an enquiry to a database, sending a confirmation email, creating a record in your CRM or checking a booking calendar.
48.7% of developers in the 2025 Stack Overflow survey had used Node.js, the highest of any web technology in the list. On the live web it is a smaller share: W3Techs counts Node.js as the server side language on 7.5% of websites where the language is known, second to PHP. The gap is because most existing sites are older WordPress installs, while most new custom builds use Node.js.
- What it is for: the server side of a modern site, including form handling, integrations, APIs and scheduled jobs.
- Why one language matters: a single developer or small team can maintain the whole site, which keeps ongoing costs down.
- What to ask: where the server code runs and who owns that account. On Vercel it runs as functions that scale with traffic, with no server to patch.
5. Python: for the AI and data work behind the site
Python is rarely the language a business website is written in, but it is often the language of the tools connected to it. It is the language most AI, data and automation libraries are written for, and it had the largest single year rise of any language in the 2025 Stack Overflow survey, up 7 percentage points to 57.9% of developers.
On the public web its footprint is small: W3Techs finds Python on 1.1% of websites with a known server side language. So the sensible pattern is a TypeScript and Next.js site with Python used for specific jobs where it fits, such as document processing, a custom AI agent, or reporting.
- What it is for: AI agents, data pipelines, document handling and integrations with tools that only offer Python libraries.
- Where it runs: Vercel runs Python applications built with FastAPI, Flask and Django as functions alongside the main site, so it does not need separate hosting.
- What to ask: whether any AI feature is planned, and if so, whether it will live inside the site's own accounts rather than a third party tool you cannot export from.
6. PHP and WordPress: what most of the web still runs on
PHP is the language WordPress is written in, and WordPress runs 40.2% of all websites, or 58.8% of sites with a known content management system, according to W3Techs in September 2026. PHP is the server side language on 69.9% of websites where the language is known. If your current site was built by a local agency in the last ten years, this is very likely what it is.
The developer picture is different. In the 2025 Stack Overflow survey, 18.9% of developers had used PHP and 13.6% had used WordPress, against 66% for JavaScript and 44.7% for React. PHP is not going away, but it is where the web has been rather than where new builds are going.
- What it is good at: a content heavy site, a blog, a small shop, or any site where a template and plugins cover the whole job.
- Where it falls short: content lives inside page layouts rather than as data, plugins need constant updating, and connecting it to your CRM, bookings or an AI tool usually means another plugin or a workaround.
- On Vercel: PHP is supported only through a community runtime, which is a signal in itself. The platform is built for the languages above.
7. Deploying on Vercel: what it means and what it costs
Vercel is a hosting platform for modern websites. Deploying means the site's code is connected to Vercel, and every change a developer publishes is built, tested and put live automatically, with a private preview link first. There is no server to rent, patch or resize. The site is served from a global network, and any server side code runs as functions that start when needed and scale with traffic.
Vercel has first class support for Next.js, SvelteKit, Nuxt, TanStack, Astro, Remix and Vite, and it runs server code in Node.js, Bun, Python, Rust, Go and Ruby. In plain terms: every language and framework on this list except PHP is a native fit, and the site can grow into AI or automation features without moving hosts.
- What it costs: the Hobby plan is free but limited to personal, non commercial use. A business site belongs on Pro, which is US$20 per developer seat per month and includes US$20 of monthly usage credit. Enterprise is priced on request.
- What to insist on: the Vercel project, the code repository and the domain all sit in accounts your business owns. A developer is invited in, not the other way around.
- What you get: a preview link for every change before it goes live, one click rollback to any previous version, and built in analytics without a cookie banner.
What these choices have in common
Every item on this list is widely used, well documented and easy to hire for. None of them is exotic. A TypeScript and Next.js site, with Node.js on the server, Python where AI or data work needs it, deployed on Vercel in your own accounts, is the stack a modern business website is most often built with in 2026, and it is the one Lumeen builds on. The point is not the technology itself. It is that a site built this way can be worked on by the next developer, connected to the next tool, and owned outright by you.
Before you approve a build, ask three questions: which language and framework, which accounts are in my name, and what happens if we part ways. A good answer to all three is worth more than any feature on the quote.
Key takeaways
- 01
JavaScript is used by 66% of developers and TypeScript by 43.6%, so a site built in them is the easiest to hire for and hand over.
- 02
React and Next.js are the most used way to build a modern site, and they let content live as data rather than inside page layouts.
- 03
WordPress still runs 40.2% of all websites, but only 13.6% of developers work with it, so it is where the web has been rather than where new builds go.
- 04
Vercel deploys every change with a preview link first, costs US$20 per developer seat on Pro, and should sit in an account your business owns.
Frequently asked questions
What is the best coding language for a business website in 2026?
TypeScript, running on a React and Next.js front end with Node.js on the server. It is the most widely used combination among developers, it runs natively on hosting platforms such as Vercel, and it keeps content as data so the site can connect to your other tools.
Is WordPress still a good choice for a new website?
For a blog, a content heavy site or a small shop where a template and plugins cover the whole job, yes. For a site that needs to connect to a CRM, a booking system or AI tools, it usually means workarounds. It also depends on plugins that need constant updating.
What does it mean to deploy a website on Vercel?
The site's code is connected to Vercel, and every change is built and published automatically, with a private preview link first. There is no server to manage. Server side code runs as functions that scale with traffic. Business use needs the Pro plan at US$20 per developer seat per month.
Do I need to understand the code to make a good decision?
No. Ask which language and framework the site is built with, whether the code, hosting and domain are in accounts your business owns, and what it would take to move to another developer. Clear answers to those three questions tell you more than the technology itself.