We have to follow GDPR-like laws and in our country providers aren't very reliable ("hey we have a maintenance tomorrow with a 30 minute downtime, sorry") so we

We have to follow GDPR-like laws and in our country providers aren't very reliable ("hey we have a maintenance tomorrow with a 30 minute downtime, sorry") so we migrate between providers a few times per year. There are always at least two providers we use at any given time (exact configuration changes every year), one in standby mode with replication between the two, and various homegrown tools to make the switch instant. Sometimes our application can enter a critical state (hardware errors or a bug in the application) so we switch to a different instance to investigate later without hurry. This complex setup was dictated by the stakeholders after we had a series of painful downtimes in 2019. There also have been cases when we migrated due to pricing changes. For the US region we use AWS and it is the most stable of all, we have zero switches there. Our platform is therefore provider-agnostic mostly.