Notes from building ApyHub.
Engineering write-ups, product decisions, and the occasional opinion on how to ship developer infrastructure. Long enough to be useful, short enough that you'll finish it.
Understanding IP Addresses: Private Ranges, Geolocation, and Security
Learn about private IP address ranges, how geolocation works, and security practices including hiding IP addresses. Explore API applications for developers.
7 Essential API Security Best Practices for Developers
Learn 7 actionable API security best practices for developers to safely handle sensitive data and prevent vulnerabilities in real-world integrations.
What Is GDPR Compliance and Why It Matters for API Integration
GDPR compliance for APIs explained—core principles, developer obligations, risks, and practical patterns for EU startups and product teams integrating APIs.
SOC 2 Compliance: Why It Matters for APIs
SOC 2 compliance for APIs: Core principles, trust categories, audit process, practical integration, and risks for software and enterprise teams.
API Certification: Data Sovereignty and Compliance in 2026
Explore ApyHub's API Certification Program for clear data handling, retention, and compliance guidance to help developers build secure, compliant apps.
Aadhaar Validation API – Secure & Instant Identity Verification for Developers
Validate Aadhaar numbers instantly with ApyHub Aadhaar Validation API. Reduce fraud, ensure KYC compliance, and streamline user onboarding with a simple API call.
Step-by-Step Guide: Quickly Sending Emails using APIs
Learn how to send bulk emails quickly and securely using APIs. Follow Gmail and Yahoo Mail guidelines, validate email addresses, and ensure deliverability with ApyHub.