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Multicloud is a cloud approach made up of more than 1 cloud service, from more than 1 cloud vendor—public or private.Multicloud is the use of two or more clouds from different cloud providers. This can be any mix of Infrastructure, Platform, or Software as a Service (IaaS, PaaS, or SaaS). For example, you may consume email as service from one vendor, customer relationship management (CRM) from another, and Infrastructure as a Service (IaaS) from yet another.
Currently, most organizations use multicloud environments. You might choose multicloud to address specific business requirements; you might also choose it to avoid the limitations of a single-vendor cloud strategy. For example, if you standardize on a single cloud vendor or approach for all of your IT services, you might find it difficult later to switch to a different vendor that offers a better platform for application development and more competitive prices. And, if the vendor you’re locked into has an outage, it will affect your whole environment.
With multicloud, you can decide which workload is best suited to which cloud based on your unique requirements. Different mission-critical workloads (such as an inventory application for a retailer or distributor, a medical records repository for a healthcare provider, or a CAD solution for an engineering firm) have their own requirements for performance, data location, scalability, and compliance, and certain vendors’ clouds will meet these requirements better than others.
When you develop a multicloud strategy, architecture is a central consideration. Architecture decisions you make today will have repercussions far into the future. Careful planning and vision are required to avoid architecture that may eventually work against you by constraining your ability to scale, make changes and upgrades, and adopt new technologies.
When designing your multicloud architecture, consider factors such as where data resides, who has access to it, and from where. If certain applications are spread across different clouds, take into account the API formats and encodings for each cloud and how you can create a seamless experience for IT administrators and users alike.