Use Apache for serious .well-known files.

Choose Pantheon if you want a faster, simpler Drupal move with strong self-service tools; choose Acquia if your migration needs enterprise controls, complex environments, and tighter governance. Both platforms can move Drupal code, databases, files, configuration, and deployment workflows safely.

Use ping first, then use traceroute when ping says “something is wrong” but refuses to say where. Ping checks if a host answers.