I recently passed the AZ-303 exam. Below are some of the resources I used to prepare for the exam. In addition to the links below, I also used Alan Rodrigues' course on Udemy.
https://www.udemy.com/course/az-102-azure-administrator-certification-transition/
The Udemy course and Microsoft Docs are enough to pass the exam. The course has some good practice exams and labs that align well with what you'll see on the real exam regarding difficulty. I was scoring in the high 90's on the Udemy exams. On the real exam, my score was 923. So, I think, if you comprehend the material well, and get high scores on Udemy practice exams, you'll do well on the real exam.
Just wanted to share my experience, hopefully it helps.
Implement and Monitor an Azure Infrastructure (50-55%)
Implement cloud infrastructure monitoring
- monitor security
- monitor performance
- configure diagnostic settings on resources
- create a performance baseline for resources
- monitor for unused resources
- monitor performance capacity
- visualize diagnostics data using Azure Monitor
- monitor health and availability
- monitor networking
- monitor service health
- monitor cost
- monitor spend
- report on spend
- configure advanced logging
- implement and configure Azure Monitor insights, including App Insights, Networks, Containers
- configure a Log Analytics workspace
- configure logging for workloads
- initiate automated responses by using Action Groups
- configure and manage advanced alerts
- collect alerts and metrics across multiple subscriptions
- view Alerts in Azure Monitor logs
Implement storage accounts
- select storage account options based on a use case
- configure Azure Files and blob storage
- configure network access to the storage account
- implement Shared Access Signatures and access policies
- Grant limited access to Azure Storage resources using shared access signatures (SAS)
- Define a stored access policy
- implement Azure AD authentication for storage
- manage access keys
- implement Azure storage replication
- implement Azure storage account failover
Implement VMs for Windows and Linux
- configure High Availability
- configure storage for VMs
- select virtual machine size
- implement Azure Dedicated Hosts
- deploy and configure scale sets
- configure Azure Disk Encryption
Automate deployment and configuration of resources
- save a deployment as an Azure Resource Manager template
- modify Azure Resource Manager template
- evaluate location of new resources
- configure a virtual disk template
- deploy from a template
- manage a template library
- create and execute an automation runbook
Implement virtual networking
- implement VNet to VNet connections
- implement VNet peering
Implement Azure Active Directory
- add custom domains
- configure Azure AD Identity Protection
- implement self-service password reset
- implement Conditional Access including MFA
- configure user accounts for MFA
- configure fraud alerts
- configure bypass options
- configure Trusted IPs
- configure verification methods
- implement and manage guest accounts
- manage multiple directories
Implement and manage hybrid identities
- install and configure Azure AD Connect
- identity synchronization options
- configure and manage password sync and password writeback
- configure single sign-on
- use Azure AD Connect Health
Implement Management and Security Solutions (25-30%)
Manage workloads in Azure
- migrate workloads using Azure Migrate
- assess infrastructure
- select a migration method
- prepare the on-premises for migration
- recommend target infrastructure
- Migrate Hyper-V VMs to Azure
- implement Azure Backup for VMs
- implement disaster recovery
- implement Azure Update Management
Implement load balancing and network security
- implement Azure Load Balancer
- implement an application gateway
- implement a Web Application Firewall
- implement Azure Firewall
- implement the Azure Front Door Service
- implement Azure Traffic Manager
- implement Network Security Groups and Application Security Groups
- implement Bastion
Implement and manage Azure governance solutions
- create and manage hierarchical structure that contains management groups
- subscriptions and resource groups
- assign RBAC roles
- create a custom RBAC role
- configure access to Azure resources by assigning roles
- configure management access to Azure
- interpret effective permissions
- set up and perform an access review
- implement and configure an Azure Policy
- implement and configure an Azure Blueprint
Manage security for applications
- implement and configure KeyVault
- implement and configure Managed Identities
- register and manage applications in Azure AD
Implement Solutions for Apps (10-15%)
Implement an application infrastructure
- create and configure Azure App Service
- create an App Service Web App for Containers
- create and configure an App Service plan
- configure an App Service
- configure networking for an App Service
- create and manage deployment slots
- implement Logic Apps
- implement Azure Functions
Implement container-based applications
- create a container image
- configure Azure Kubernetes Service
- publish and automate image deployment to the Azure Container Registry
- publish a solution on an Azure Container Instance
Implement and Manage Data Platforms (10-15%)
Implement NoSQL databases
- configure storage account tables
- select appropriate CosmosDB APIs
- set up replicas in CosmosDB
Implement Azure SQL databases
- configure Azure SQL database settings
- implement Azure SQL Database managed instances
- configure HA for an Azure SQL database
- publish an Azure SQL database
