Multicloud
Multicloud uses services from several cloud providers. This can give access to specialised capabilities but does not create automatic failover.
What does multicloud mean?
Multicloud means using cloud services from multiple providers. Two regions of the same provider therefore do not constitute multicloud. AWS describes potential benefits alongside the extra effort for skills, tools and integration. A specific task should justify the second provider.
Multicloud and hybrid cloud answer different questions: How many providers are used, and which cloud environments work together? An architecture can have both characteristics. Several public clouds can also handle tasks independently of each other.
Two providers are not automatically interchangeable
In the fictional portal P-84, provider A supplies the application platform. A cloud service from provider B translates help texts approved for sharing. This is multicloud even though the portal is neither installed nor ready to run at B. If A fails, B does not automatically take over the portal.
An outage at B also needs defined handling. Our design keeps previously approved translations available and marks new translation jobs as pending. Continuing independently requires existing texts to remain accessible without B; the architecture must enable that.
Document data transfers, identities, monitoring, costs and a possible switch for each service. If you actually need failover, the application, current data and necessary dependencies must be prepared and tested for it. The number of providers is not evidence of that capability.
Sources
Related terms
- Public cloudPublic cloud describes a cloud model offered to a broad customer base. Access rules and configuration still determine who can see your application data.
- Hybrid cloudHybrid cloud connects different cloud environments. The joint application needs defined data flows, access rules and behaviour when connections fail.
- Return-PathReturn-Path records the SMTP reverse path in a header. It explains the technical route for error reports, not a person’s identity.
- Envelope-FromEnvelope-From identifies the SMTP sender for transport and error feedback. It must be distinguished from the visible sender address.
- DMARC aggregate reportA DMARC aggregate report summarises a reporting mail system’s domain checks over a period. It helps examine sending sources and misconfigurations.
- DMARC policyA DMARC policy describes the requested handling of failed domain checks. It repairs neither sending sources nor their alignment.
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