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Zoho API IntegrationNext.js and React development services
For React applications that need more than a browser: pages search engines can read, logins checked on the server, and live data from your APIs, PostgreSQL or Zoho - with every credential kept server-side.
Web apps, customer portals and SaaS front ends built in Next.js and React.
Next.js is a React framework that adds the server side. The same codebase renders pages before they reach the browser, runs server code that can talk to databases and APIs with credentials users never see, and still gives you a fully interactive React interface once the page has loaded. That combination is why we use it for customer portals, SaaS products, internal tools and content-heavy sites.
Everything is written in TypeScript, with rendering and caching chosen page by page rather than left to one default. Behind the interface sits whatever your data needs: PostgreSQL through Prisma for a self-contained app, a NestJS API for a larger system, or Zoho's APIs when the records already live in CRM or Books.
If you want to judge the front-end work before talking to us, this website is a Next.js App Router build, exported to static files and served without a Node.js server. And if Next.js is more than your project needs, we will say so - a plain React app or a website builder is sometimes the better buy.
What's included
- Next.js App Router applications
- React & TypeScript front ends
- Customer & partner portals
- SaaS dashboards & internal tools
- Authentication, roles & permissions
- Server rendering, SEO & metadata
- CRA, Vite & Pages Router migrations
- Connections to APIs, PostgreSQL & Zoho
What we build with Next.js and React
Next.js earns its place when an application needs a public face and a private one, or server code alongside the interface. These are the projects where it does.
Customer and partner portals
Where customers place orders, track jobs, download invoices or update their details, reading and writing records in your systems - Zoho included - through server code that keeps every credential out of the browser.
SaaS products
The application your customers pay for, plus the marketing pages, sign-up and billing screens around it. One codebase: the public pages rendered for search, the product behind a login.
Internal tools and dashboards
Operations screens, approval queues and reporting views built around one team's workflow, often pulling several systems into a single view.
Content sites on a headless CMS
Marketing sites, documentation and blogs rendered as static pages from content your team manages in a CMS. This site is built that way.
When plain React or a static site is enough
Next.js brings a server, a build pipeline and rendering decisions - worth having when you use them, dead weight when you do not. These are the cases where we suggest something simpler.
Everything sits behind a login
An admin panel or operations tool that no search engine will ever see does not need server rendering. React with Vite builds it into static files any web server can host, and it talks to your API like any other client.
A brochure site your team edits every week
A few pages that marketing changes often are usually better on a website builder or WordPress, where editing is self-service from day one. Next.js with a headless CMS can give you both, but costs more to build.
The screen belongs inside Zoho
If your team needs a new view on a CRM record, a widget inside Zoho beats a separate site they have to remember to open. It is still a small web app, built with Zoho's own toolkit.
Rendering, SEO and hosting choices
Each route in Next.js can be rendered differently, and that choice sets how fast the page is, how fresh its data is, what a search engine sees and where the app can run.
Anything meant to rank is rendered to HTML before it reaches the browser, with its own title, description and canonical URL - search engines can run JavaScript, but not every crawler or link-preview bot does. Caching is set explicitly per route, because the framework's defaults have changed between major versions. And none of it requires Vercel: a static export runs on any web server, and the rest runs anywhere Node.js does.
Built at deploy time
Pages generated once when you deploy, then served as plain files from any web server or CDN. The fastest and cheapest option to run, and how this site is built.
Rendered on each request
For pages that depend on who is asking, or on data that changes minute to minute. It needs a server at runtime: a Node.js process on a VPS, in a container, or on a managed platform.
Built, then refreshed
A pre-built page regenerated in the background on a schedule or when its data changes: fast like a static page, fresh enough for catalogs and listings. It needs a server too, and a shared cache once you run more than one.
Rendered in the browser
For dashboards behind a login that search engines never visit. The page shell arrives quickly and the data loads as the user works.
Authentication and roles, checked on the server
Logins are a common place for front-end projects to go wrong, usually because access is enforced by hiding things in the interface. A hidden button is not a permission: we check who the user is and what they may do on the server, every time data is read or changed.
Sign-in that suits your users
Email and password, magic links, or single sign-on with your existing Microsoft or Google accounts - built on an established auth library or identity provider, never a homegrown password scheme.
Sessions that scripts cannot read
Sessions are kept in secure, HTTP-only cookies rather than as tokens in local storage, where any injected script could read them.
Roles and record-level access
Roles decide which screens and actions a user gets; record-level rules decide whose data they see. Both are enforced in the server code that fetches the data, so editing a URL cannot reveal another customer's account.
Connecting Next.js to NestJS, PostgreSQL and Zoho
Where the data should come from depends on how big the system is and who else needs it. Three shapes cover most apps, and many use more than one.
Straight to PostgreSQL
For a self-contained app, Next.js server code queries PostgreSQL through Prisma directly. One codebase and one deployment - the simplest setup that works, until other clients need the same data.
Through a NestJS API
When a mobile app, partners or background jobs need the same data, or integration logic gets heavy, the backend moves into a separate NestJS service. Next.js becomes one client of a documented API, at the cost of a second deployment.
Zoho data, without spending your API limits
A portal can read CRM or Books records live through Zoho's APIs, from server code holding the OAuth credentials. Busy pages read a synced copy in PostgreSQL instead, refreshed by Zoho webhooks, so page views do not use up your API limits.
React to Next.js migration and upgrades
Most migrations do not need a rewrite. Next.js can run your existing single-page app as one client-rendered route on day one; pages then move across one at a time while the app stays in production.
From Create React App
The React team has deprecated Create React App, so its build tooling is no longer moving forward. We move the build to Next.js, rename browser-facing REACT_APP_ variables to NEXT_PUBLIC_, and replace React Router a route at a time.
From Vite
Vite is a healthy, maintained tool, so moving off it is only worth it if you need server rendering, SEO or server-side code. When you do, the same step-by-step route applies.
Pages Router to App Router
The two routers run side by side in one app, so routes move individually. Data fetching moves from getServerSideProps and getStaticProps into server components, and _app and _document become a root layout.
Version upgrades
Major Next.js and React releases change defaults, not just APIs. We run the official codemods, then test what they cannot catch: caching behavior, rendering differences and third-party packages that lag behind.
What you get out of it
Outcomes that matter to your business - not just features.
Real HTML, not a spinner
Pages arrive rendered, so people and search engines see content without waiting on JavaScript.
Secrets stay on the server
API keys and Zoho tokens live in server code the browser never downloads.
Easy to hire for
React and TypeScript are mainstream, so your own developers can take the code over.
No hosting lock-in
Static files, a Node.js server or a container - Vercel is optional, not required.
How we deliver this service
Map users and pages
Who signs in, what each role can see and do, and which pages must be public and findable in search.
Choose rendering per route
Static, server-rendered or browser-rendered for each page - a decision that also settles where the app can be hosted.
Define the data behind each screen
The API calls or database queries every screen depends on, agreed before the interface is built on top of them.
Build in working slices
One end-to-end feature at a time on a staging URL you can click through, instead of a gallery of mockups.
Launch and hand over
Deployment into your own hosting account, with monitoring, documentation and a walkthrough for your developers.
You might also need
Next.js & React - FAQs
The questions we are asked most about Next.js & React.
Ready to start? Let's scope it.
Book a free discovery call and we'll map out exactly how this can work for your business.