You manage your domains via your DNS provider. The domains will need to point to either the region where the project is hosted or to Fastly CDN when it is included in your plan.
- Pointing to the Region: Find out which region is the project hosted by checking the General project settings. Point the domain to the Inbound IPs for the region listed at https://docs.platform.sh/development/regions.html#public-ip-addresses.
- Pointing to Fastly: The CNAME record for Fastly is <PROJECT_ID>.edge.platform.sh or these IP addresses: 151.101.2.216, 151.101.66.216, 151.101.130.216 & 151.101.194.216.
It is preferable to use CNAME record for subdomains and A records with IP addresses for APEX domains.