Digital Marketing
Technical SEO Checklist for 2026: The Complete Guide
A complete technical SEO checklist covering crawlability, indexing, structured data, and Core Web Vitals — AelfTech's step-by-step audit for 2026.
The AelfTech Blog
Insights, guides & deep-dives
Practical, practitioner-led writing across technology, digital marketing and engineering — from the team and community at aelftech.com.
Data & Analytics
ETL vs ELT: Choosing the Right Data Pipeline
ETL vs ELT compared on cost, latency, and governance. AelfTech's rubric helps data teams pick the right pipeline pattern for their cloud warehouse.
AI & Machine Learning
Fine-Tuning vs RAG: How to Choose the Right Approach
Fine-tuning vs RAG compared on cost, accuracy, and data freshness. AelfTech's decision framework helps you pick the right LLM approach before you build.
Web Development
React Server Components Explained: A Practical Guide
React Server Components explained with clear mental models and real Next.js App Router examples. AelfTech shows when to use RSC vs client components.
Engineering
Idempotency in Distributed Systems: Why Retries Don't Break Things
Learn how idempotency keys and safe retry logic stop duplicate charges and orders. AelfTech engineers break down reliable distributed systems design.