AWS/Azure/GCP provides a set of flexible services designed to enable companies to more rapidly and reliably build and deliver products using Cloud and DevOps practices. These services simplify provisioning and managing infrastructure, deploying application code, automating software release processes, and monitoring your application and infrastructure performance.
DevOps is the combination of cultural philosophies, practices, and tools that increases an organisations ability to deliver applications and services at high velocity, evolving and improving products at a faster pace than organisations using traditional software development and infrastructure management processes.