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What makes multi-brand DNS difficult?

The challenge is rarely the number of domains alone. Complexity comes from the records and services connected to them. One brand may use a corporate website, while another operates an e-commerce platform, separate transactional email infrastructure, multiple APIs, and regional subdomains. Acquisitions can add domains with completely different DNS conventions.

How should organizations structure DNS management?

Start by creating an inventory of every domain, DNS zone, owner, registrar, and business-critical service. Next, define standards for common records and security controls. Production changes should follow an approval process, while access should be limited according to each person’s responsibilities. Centralization does not necessarily mean placing every brand into one identical configuration.

What about acquired brands?

DNS should be reviewed early during technical due diligence. Before changing an acquired company’s records, identify its websites, MX records, APIs, verification records, CDN configuration, third-party SaaS services, and security settings. Removing an unfamiliar TXT or CNAME record without investigation can unexpectedly interrupt an important service.