Amazon Web Services (AWS), Microsoft Azure, IBM Cloud, and Google Cloud are all popular public cloud providers.

Advantages:

Built to support workloads of virtually any scale, large or small

Ease of provisioning without upfront cost

Massive catalog of services from bare metal to business services

Cost-effective with competitive pricing between public cloud providers

Disadvantages:

Shared tenancy (risk of sensitive data exposure to other tenants, ChaosDB)

Data residency/privacy regulations might not be satisfied in the public cloud

Pay for everything you use, almost nothing is free. Your datacenter cost is less variable and more fixed.

https://launchdarkly.com/blog/cloud-deployment-models-explaining-and-comparing-the/