What Are the Best Practices for Modern Web Development in 2025?

The pace of my learning as a junior web developer and the rate of change in web development tools, frameworks, and performance expectations has been an interesting experience in my career so far. Everyone seems to be using React, Tailwind CSS, Astro, and even some serverless platforms. While its great to have options, choice paralysis is a common problem.

I am curious about common practices web developers use in 2025 to create fast, scalable, and user-centric websites or web applications. My specific interests are in:

Folder structure and code organization

Framework selection between React, Next.js, Astro, or Svelte

Mobile-first and SEO centric performance optimizations

Global state management and API integration

Application deployment (Vercel, Netlify, Cloudflare, etc.)

Also, how do you determine the balance between third-party libraries and custom code? Are there any emerging trends like AI integration, edge computing, or WebAssembly that you have adopted in your daily tasks

Despite being a novice in the industry, I can understand that any guidance, thoughts, or even your workflows or stacks aimed at enhancing long-term adaptability and efficiency would be extremely helpful for developers like myself navigating these waters.