# Approximated blog

Canonical source: https://approximated.app/blog/
Author: Approximated

Practical articles on custom domains for SaaS, written by the team building and operating Approximated.

## Custom domain security for multi-tenant SaaS

Secure SaaS custom domains with safe tenant claims, WAF and DDoS protection, Edge Verify, monitoring, and verified hostname reassignment.

Published: 2026-09-23; last reviewed: 2026-09-28

- [Canonical article](https://approximated.app/blog/custom-domain-security/)
- [Complete Markdown article](https://approximated.app/blog/custom-domain-security/index.md)

## A custom domain onboarding checklist customers can follow

Design a custom-domain setup flow around five checks: tenant claim, edge configuration, DNS, certificate, and a real application request.

Published: 2026-09-04; last reviewed: 2026-09-28

- [Canonical article](https://approximated.app/blog/custom-domain-onboarding-checklist/)
- [Complete Markdown article](https://approximated.app/blog/custom-domain-onboarding-checklist/index.md)

## Apex domains for SaaS: DNS choices and SSL

Support customer root domains with A records, ALIAS or CNAME flattening, or redirects. Learn the DNS and HTTPS checks each choice needs.

Published: 2026-08-13; last reviewed: 2026-09-28

- [Canonical article](https://approximated.app/blog/apex-domains-for-saas/)
- [Complete Markdown article](https://approximated.app/blog/apex-domains-for-saas/index.md)

## How to choose the best custom domain API for your SaaS

Compare Approximated, Cloudflare for SaaS, and Entri Power on TLS, apex DNS, WAF, DDoS protection, monitoring, support, self-hosting, and pricing.

Published: 2026-07-24; last reviewed: 2026-09-28

- [Canonical article](https://approximated.app/blog/best-custom-domain-apis-for-saas/)
- [Complete Markdown article](https://approximated.app/blog/best-custom-domain-apis-for-saas/index.md)

## Custom domains for SaaS: a production guide

A production guide to SaaS custom domains: DNS, TLS, tenant routing, WAF and DDoS protection, monitoring, webhooks, and self-hosting.

Published: 2026-06-30; last reviewed: 2026-09-28

- [Canonical article](https://approximated.app/blog/custom-domains-for-saas-guide/)
- [Complete Markdown article](https://approximated.app/blog/custom-domains-for-saas-guide/index.md)

[Atom feed](https://approximated.app/blog/feed.xml)
[Structured article catalog](https://approximated.app/blog/articles.json)