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Continue to ChatQuery : Personalized sub-domain URLs Most of the SaaS companies, some social networking, and blog services (like Wordpress.com and blogger) create a personalized sub-domain for each user, e.g. username.website.com https://vmapp.org/query/87107/Personalized-Sub-Domain-URLs-Most-Of-The-SaaS-Companies-Some-Social-Networking-And-Blog-Services-Like-Wordpress-Com-And-Blogger-Create-A-Personalized-Sub-Domain-For-Each-User-E-G-Username-Website-Com/