Hey Nerou,
There are numerous ways you can inter-link the different services mentioned, and others, although for your needs, to directly transition from an XAMP server, you could simply spin up a Compute Engine instance and install the relevant software on it, including Apache, MySQL, PHP, and phpmyadmin for interfacing with the DB, etc. Later on, you could modify parts of your codebase to make use of other services such as
Cloud Pub/Sub,
Dataflow,
BigQuery (especially for
logs analysis), or others.
In general, just spinning up a Compute Engine instance, you'll have access to all kinds of default services like
Cloud Monitoring, and others, through the
Developers Console.
Regards,
Nick