To match the on-premises experience for connecting to your availability group listener, deploy your SQL Server VMs to multiple subnets within the same virtual network. Having multiple subnets negates the need for the extra dependency on an Azure Load Balancer, or a distributed network name (DNN) to route your traffic to your listener. ref: https://learn.microsoft.com/en- us/azure/azure-sql/virtual-machines/windows/availability-group-overview?view=azuresql- vm#connectivity

How to increase the maximum storage size of the query store for an azure database using Azure portal?
How to increase the maximum storage size of the query store for an azure database using SQL Server Management Studio?
To increase the size of Azure Query Store, you can use Transact-SQL within either SSMS (SQL Server Management Studio or the Azure portal. Specifically, you'll need to modify the MAX_STORAGE_SIZE_MB setting for the database. No GUI options exist for direct modification within the Azure portal.
Step 1: Connect to your database:
Use SSMS or the Azure portal to connect to the database where you want to increase the Query Store size. [Connect to db1] Step 2: . Execute the ALTER DATABASE statement:
Run the following Transact-SQL query (replacing YourDB with your database name and 1024 with the desired storage size in MB):
ALTER DATABASE [YourDB] SET QUERY_STORE (MAX_STORAGE_SIZE_MB = 1024);
*-> Use the following query: ALTER DATABASE db1 SET QUERY_STORE
(MAX_STORAGE_SIZE_MB = 4000);
Step 3: Apply changes: The Query Store will automatically adjust to the new size.
Reference:
https://learn.microsoft.com/en-us/sql/relational-databases/performance/monitoring-performance-by-using-the-query-store

Full mode installs the SQL IaaS Agent to the VM to deliver full functionality. Use it for managing a SQL Server VM with a single instance. Full mode installs two Windows services that have a minimal impact to memory and CPU.
https://learn.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/sql-server-iaas-agent-extension-automate-management?view=azuresql&tabs=azure-powershell#management-modes

A: Money takes less space compared to VARCHAR(20)
E: Date takes less space compared to Datetime.
Reference:
https://docs.microsoft.com/eN-Us/sql/t-sql/data-types/data-types-transact-sql

Explanation:
Box 1: 'AzureManagedInstance_dbmail_profile',
Job notifications
SQL Agent jobs enable you to get notifications when the job finishes successfully or fails. You can receive notifications via email.
As an example exercise, set up an email account for sending the email notifications. Assign the account to the email profile called AzureManagedInstance_dbmail_profile. To send e-mail using SQL Agent jobs in SQL Managed Instance, there should be a profile that must be called AzureManagedInstance_dbmail_profile. Otherwise, SQL Managed Instance is unable to send emails via SQL Agent.
Box 2: notify_level_email
You can modify any SQL Agent job and assign operators that are notified via email if the job completes, fails, or succeeds. Modify the job by using SSMS or the following T-SQL script:
EXEC msdb.dbo.sp_update_job @job_name=N'Load data using SSIS',
@notify_level_email=3, -- Options are: 1 on succeed, 2 on failure, 3 on complete
@notify_email_operator_name=N'AzureSQLTeam';
Reference:
https://learn.microsoft.com/en-us/azure/azure-sql/managed-instance/job-automation-managed-instance