Cloud Engineer interview questions

Cloud computing is the delivery of computing services—servers, storage, databases, networking, software—over the Internet (“the cloud”). It's important because it allows for flexible resources, economies of scale, and innovation.

The different types of cloud services are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Each offers different levels of control and management in the cloud environment.

Public clouds are owned and operated by third-party cloud service providers, delivering computing resources over the internet. Private clouds are exclusive to a single organization and maintained on a private network. Hybrid clouds combine public and private cloud environments, allowing data and applications to be shared between them.

A Cloud Engineer designs, implements, and maintains cloud services and infrastructure, ensures the security and accessibility of cloud systems, optimizes performance and cost-effectiveness, and collaborates with development teams to support cloud-based applications.

Scalability refers to the ability of a system to grow and manage increased demand. In cloud computing, scalability is a key feature that allows organizations to scale up or down their resources based on demand.

Ensuring security in a cloud environment involves implementing strong data encryption, managing user identities, controlling access, regularly updating systems, and performing security audits and assessments.

Microservices architecture is a design approach where applications are developed as a collection of small, independent services. In the cloud, microservices improve scalability, deployability, and maintainability of applications.

Common tools and platforms used by Cloud Engineers include AWS, Azure, Google Cloud Platform, Docker, Kubernetes, Terraform, Jenkins, and Ansible.

Handling data migration involves planning, ensuring data consistency, minimizing downtime, validating post-migration, and considering security and compliance issues during the migration process.

An instance in cloud computing is a virtual server that runs applications on the cloud. It functions like a server but is hosted on a virtual infrastructure and can be easily managed, scaled, and replicated.