There are a few things you need to consider when building modern applications. Such as:
* User Interface - how users will consume and interact with your application.
* Routing - how users navigate between different parts of your application.
* Data Fetching - where your data lives and how to get it.
* Rendering - when and where you render static or dynamic content.
* Integrations - what third-party services you use (CMS, auth, payments, etc
) and how you connect to them.
* Infrastructure - where you deploy, store, and run your application code (Serverless, CDN, Edge, etc).
* Performance - how to optimize your application for end-users.
* Scalability - how your application adapts as your team, data, and traffic grow.
* Developer Experience - your team’s experience building and maintaining your application.
For each part of your application, you will need to decide whether you will build a solution yourself or use other tools such as libraries and frameworks.