Website migration is the process of moving website files, databases, and related services from one hosting environment to another.
In most cases, a properly planned migration does not cause website downtime. Visitors continue accessing the website on the current server while data is copied to the new hosting environment.
Table of Contents
How Website Migration Works
A typical migration takes place in several stages:
- Website files and databases are copied to the new server.
- The migrated website is tested on the new environment.
- DNS settings are updated to direct visitors to the new server.
- Traffic gradually begins reaching the new hosting environment.
During the first stages, visitors continue accessing the website through the existing server.
What Happens During DNS Changes?
Once the website has been migrated and tested, DNS records are updated to point the domain to the new server.
This process is known as DNS propagation.
During propagation, some visitors may reach the old server while others reach the new one. This is expected behaviour and can last from a few hours up to 48 hours, depending on DNS caching and internet providers.
Will Visitors Notice the Migration?
In most cases, visitors will not notice that a migration is taking place.
If the migration is properly planned and the website remains available on the original server until DNS propagation is complete, service interruptions are usually avoided.
What Can Cause Downtime?
Although website migrations are generally seamless, temporary issues may occur if:
- DNS records are configured incorrectly
- The website is not tested before launch
- Files or databases are missing after migration
- The old hosting service is cancelled before propagation is complete
Careful planning helps reduce the risk of these problems.
Practical Implications
When migrating a website, it is recommended to keep the existing hosting service active until DNS propagation has finished and the website is confirmed to be working correctly on the new server.
This allows visitors to continue accessing the website throughout the migration process.
Summary
A website migration does not normally cause downtime. Visitors continue accessing the website through the existing server while files are copied and the new environment is prepared.
Once DNS records are updated, traffic gradually moves to the new server. During this period, temporary differences in how visitors reach the website are expected and are a normal part of the migration process.