A detailed video you can watch.

DevOpsEngineerinMonolith

ContinuousIntegration

ContinuousDeployment

ConfigurationManagement

AutomatedTesting

MonitoringandLogging

DeploymentAutomation

InfrastructureasCode

DatabaseManagement

Networking

Virtualization

DevOps Engineer in Microservices:

Containerization (e.g. Docker)

Service Orchestration (e.g. Kubernetes)

Microservices Architecture

API Management

Distributed Systems

Infrastructure Automation

Continuous Delivery

CloudEngineer:

Cloud Computing

InfrastructureasaService

IaaS

PlatformasaService

PaaS

SoftwareasaService

SaaS

PublicCloud

PrivateCloud

HybridCloud

CloudMigration

CloudSecurity

CloudScalability

CloudAutomation

Virtualization

NetworkingintheCloud

CloudCostOptimization

CloudDisasterRecovery

ClouMonitoringandManagement

CloudProviders

DevOpsintheCloud

CloudNativeApplications