You've received a proposal for your new software application, and everything looks promising until you reach the technical specifications. The development team recommends Vue.js for the front end, Node.js for the API, PostgreSQL for the database, and AWS for hosting.
But what does any of that actually mean for your business?
If you're not familiar with software development, these terms can make it difficult to understand what you're paying for or why certain technologies have been recommended.
The good news is that you don't need to know how to code to make informed decisions about your software. Understanding a few fundamental concepts can help you follow technical discussions, compare proposals, and ask better questions.
In this guide, we'll break down the terminology, explain where different technologies fit into a software project, and help you understand what to look for when reviewing a proposed tech stack.
What Is a Tech Stack?
A tech stack (short for technology stack), is the combination of programming languages, frameworks, databases, and other technologies used to build, run, and maintain a software application.
Each technology has a particular job, and together they make the application work.
Think of it like a restaurant. The dining room is what customers see and interact with, much like an application's front end. Behind the scenes, the kitchen handles the work, just as the back end processes requests and carries out operations. The pantry stores the ingredients (similar to how a database stores information), while the waiters carry requests and information between the dining room and kitchen—much like APIs.
The restaurant also needs a building and utilities to operate. Similarly, an application needs infrastructure, such as servers or cloud hosting, to run.
Not every application uses the same technologies. A simple business website, an online banking platform, and a mobile shopping app have very different requirements, so their tech stacks will differ too.
Programming Languages, Frameworks, and Libraries: What's the Difference?
When reviewing a development proposal, you'll probably encounter several unfamiliar technology names. Some refer to programming languages, while others are frameworks, libraries, or tools that support the development process.
Although these terms are sometimes used interchangeably, they describe different things.
What Is a Programming Language?
A programming language is a way for developers to write instructions that computers can execute. These instructions determine how software behaves, processes information, and responds to users.
There are many types of programming languages, each with different strengths and applications.
For example, JavaScript is widely used in web development, Swift is commonly used for Apple applications, and Kotlin is a popular choice for Android development. Python, Java, and C# are also used to build various types of software.
The language a development team chooses depends on what they're building and the technologies the language needs to work with.
What Is a Framework?
A framework provides developers with an existing structure, tools, and conventions for building software.
Rather than creating every component from scratch, developers can use a framework to handle common development tasks and organize their code.
For example, Angular is a framework for building web interfaces, Flutter supports cross-platform application development, and Laravel is a PHP framework commonly used for web applications.
Frameworks can help make development more efficient, but they still require developers to write, customize, and maintain the application's code.
Framework vs Library: What's the Difference?
A library is a collection of reusable code that developers can use for specific tasks, while a framework generally provides a broader structure for organizing an application.
React, for example, is a JavaScript library used to build user interfaces, although it's often discussed alongside front-end frameworks such as Angular and Vue.js.
Due to this, the distinction can become blurred in practice, particularly when libraries are combined with other tools to create a complete development solution.
Are HTML, CSS, and SQL Programming Languages?
The short answer is yes, but not every language used in software development serves the same purpose.
- HTML (HyperText Markup Language) defines the structure of web content, such as headings, paragraphs, and images.
- CSS (Cascading Style Sheets) controls how that content looks, including colors, fonts, and layouts.
- SQL (Structured Query Language) is used to work with information stored in relational databases.
These are all languages used in development, but they aren't general-purpose programming languages in the same sense as JavaScript or Java.
Understanding this distinction makes it easier to see why a development proposal might include several different languages for a single application.
Where Can Your Software Run? Understanding Development Platforms
Before choosing the technologies used to build an application, it's important to understand where people will use it.
A development platform refers to the environment or ecosystem an application is built for, such as a web browser, mobile operating system, or desktop computer. Different platforms have different capabilities and development requirements.
Here's a quick overview of the options you may encounter:
- Web Application: Software accessed through a web browser, usually without installing a separate app.
- Native iOS App: Software accessed through a web browser, usually without installing a separate app.
- Native Android App: An application developed specifically for Android devices, commonly using Kotlin or Java.
- Cross-Platform Mobile App: An application built using a shared codebase to support multiple operating systems, often using frameworks such as Flutter.
- Progressive Web App (PWA): A web application that uses browser technologies to offer certain app-like features, such as installation and some offline functionality.
- Desktop Application: Software designed to run on computers using operating systems, such as Windows or macOS.
- Server or Cloud Environment: Infrastructure that runs back-end services, processes requests, and supports applications.
These options aren't necessarily mutually exclusive. A mobile application, for example, might run on iOS and Android while connecting to a shared back end hosted in the cloud.
The right approach depends on your users, the features your product needs, and how people are expected to access it.
If you're still deciding whether your product should be browser-based or installed on a mobile device, our guide to mobile apps vs web apps explores the differences in more detail.
Front End vs Back End vs Database: How the Pieces Work Together
Now that we've covered the terminology, let's look at how these technologies work together to create a functioning application.
Front End: What Users See and Interact With
The front end is the part of an application users interact with directly. It includes everything from navigation menus and buttons, to forms, dashboards, and other visual elements.
For web applications, developers commonly use HTML, CSS, and JavaScript, often alongside technologies such as React, Angular, or Vue.js to create interactive interfaces.
Back End: What Happens Behind the Scenes
The back end handles operations that users don't see, such as processing payments, managing accounts, checking permissions, and applying business rules.
Technologies such as Node.js, Java, PHP, Ruby, and .NET can be used to build these server-side functions.
Databases: Where Information Is Stored
Applications often need to store and retrieve information, whether that's customer details, product inventories, or transaction records.
Relational databases, such as MySQL, organize information into related tables and commonly use SQL to manage and query data. NoSQL databases, such as MongoDB, offer different ways of organizing information, including document-based storage.
APIs: Connecting the Different Components
An application programming interface (API) allows different software components or systems to communicate.
For example, when you check an order's delivery status, an API might retrieve the latest information from a shipping provider and make it available in your app.
We explain this further in our guide to what API stands for.
When a development company describes itself as full-stack, it generally means its team can work across both front- and back-end development, rather than focusing exclusively on one.
Tech Stack Cheat Sheet: Languages, Frameworks, and Platforms Explained
With so many technologies available, it's useful to have a quick reference when reviewing a development proposal.
Front-End Technologies
Back-End Technologies
Databases and Query Languages
Mobile App Development
Common Tech Stack Examples You Might See in a Proposal
Individual technologies are often combined into established tech stacks. You may encounter names such as:
- MERN: MongoDB, Express, React, and Node.js. A JavaScript-based stack commonly used for interactive web applications.
- MEAN: MongoDB, Express, Angular, and Node.js. Similar to MERN, but uses Angular for the front end.
- LAMP: Linux, Apache, MySQL, and PHP. A long-established combination for database-driven websites and web applications.
- .NET + SQL Server: A Microsoft technology combination often considered for enterprise applications and internal business systems.
- Vue.js + Node.js: A combination that uses Vue.js for the user interface and Node.js for server-side functionality.
- Flutter + Firebase: An approach for cross-platform applications that uses Firebase services for features such as authentication and data storage.
These examples aren't fixed recipes, and choosing a familiar stack doesn't automatically make it suitable for your project. Development teams may combine technologies differently depending on the application's requirements, existing systems, and long-term needs.
How Do Development Companies Choose the Right Tech Stack?
With so many technologies available, how does a development company decide which combination to use?
At AppIt Ventures, we believe technology decisions should start with understanding what you're trying to build, who will use it, and what the product needs to accomplish. The tech stack should support those requirements, rather than dictate them.
Several factors influence that decision:
- Product requirements: A customer-facing mobile app, an internal business platform, and an e-commerce website all have different functional needs.
- Target platforms: Whether your application needs to run on iOS, Android, the web, or multiple platforms will influence the technologies considered.
- Performance and scalability: The stack should support the application's expected workload and accommodate future growth without unnecessary complexity.
- Integrations and security: Existing business systems, third-party services, and data protection requirements can influence which technologies are suitable.
- Long-term maintenance: Established technologies with active developer communities may make it easier to maintain, update, and expand your application.
- Budget and timeline: Development effort, available expertise, hosting, licensing, and ongoing support all contribute to the total cost.
There isn't one universal best tech stack. A technology that's well suited to one application may introduce unnecessary costs or complications for another.
The goal is to select an approach that meets your current requirements while giving your product room to evolve.
Five Questions to Ask Before Approving a Tech Stack
You don't need to be a developer to have a meaningful conversation about the technologies proposed for your project. These five questions can help you evaluate a recommendation:
- Why are you recommending this particular stack? Ask how the proposed technologies support your application's specific requirements and what alternatives were considered.
- How easy will the application be to maintain? Find out whether other developers could work on the code and how future updates will be handled.
- What ongoing costs should we expect? Look beyond the initial development quote to hosting, software licenses, maintenance, and third-party services.
- Will it work with our existing systems? Discuss any CRM, payment platforms, databases, or internal tools the application needs to connect with.
- Who owns the code and technical assets? Clarify ownership of the source code, hosting accounts, and other project assets in your development agreement.
A good development partner should be able to explain these decisions in language you understand, without expecting you to have a technical background.
Choose a Tech Stack That Supports Your Product
Understanding a tech stack doesn't mean you need to become a software developer. It means knowing enough to ask informed questions and feel confident about the decisions being made for your product.
At AppIt Ventures, we help businesses evaluate their requirements and choose technologies that support their goals, budget, and long-term plans.
Talk to our team about your project, and let's explore the right development approach for your business.
