How to choose a tech stack for your web application
What a tech stack is, the choices that matter for a business application, and the questions to ask your developer before anything is built.
Tech guideThe tech stack is the set of languages, frameworks, database and hosting your software is built on. You don't need to be technical to have a say in it — but the choice affects how fast the project moves, how easy it is to hire developers later and what it costs to run.
The layers of a stack
The frontend is what users see and click, usually built with React or a framework on top of it such as Next.js. The backend handles business rules, permissions and integrations — commonly Node.js, PHP or Python. The database stores the records, and hosting runs it all.
Each layer can be chosen separately, but they work best when they're well known together and well documented.
Choose popular, boring technology for the core
For business software, the best stack is usually the one with the most developers, documentation and long-term support. React, Next.js, TypeScript, Node.js or PHP, and PostgreSQL or MySQL are all mature choices with large communities. That matters when you need to hire, hand over or extend the system in five years.
Be cautious about a developer's favourite niche framework. It may be excellent, but if only a few people know it, you're tied to them.
Pick the database for your data
Most business data — customers, orders, invoices, stock, staff — is structured and related, which is exactly what relational databases such as PostgreSQL and MySQL are built for. They enforce consistency, which matters when money and stock quantities are involved.
Document databases such as MongoDB suit flexible or rapidly changing data, but for accounting-style records a relational database is the safer default.
Plan for integrations and growth
List what the system must talk to: payment gateways, WhatsApp or SMS, accounting software, e-invoicing, maps, email. Check the stack has good, maintained libraries for each.
You rarely need to design for millions of users on day one. A clean structure, a sound database design and sensible hosting will carry most business applications a long way, and can be scaled when real usage demands it.
Questions to ask your developer
Why this stack for this project? How easy would it be for another team to take over? Who owns the source code and hosting accounts? How are backups, updates and security handled? What will hosting cost each month as usage grows?
Clear answers to these are a better sign of a good partner than any particular technology choice.
Frequently asked questions
What tech stack do you use for web applications?
Mostly Next.js, React and TypeScript on the frontend, Node.js or PHP on the backend and MySQL or PostgreSQL for data, chosen to suit each project.
Does the tech stack affect cost?
Yes. Mature, popular stacks are faster to build with and cheaper to maintain because tools, libraries and developers are easy to find.
Will I own the code?
Ownership is agreed in the proposal. For bespoke builds, clients typically receive the full source code and deployment access.
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