[Datadog] I want to trigger alerts to different channels based on conditions when configuring a Monitor.

When configuring a monitor, you can apply different messages and alert propagation channels for each condition by using conditional variables in the “Notify your team” section.

If you want to configure different propagation channels and messages based on a specific tag value,
it is recommended to create a new monitor or clone an existing one for each propagation channel, and create monitors per system individually.

Using multiple propagation channels in a single monitor may lead to different owners or management channels overseeing one monitor,
which requires alignment on common conditions such as thresholds.
Also, incorrect changes could affect multiple channels simultaneously.
For this reason, the method below should be used minimally and only when management is not an issue.

To apply conditions in the “Notify your team” message field,
you can use the following conditional variables from the list shown above:

• {{#is_match "variable" "value1" "value2" }}{{/is_match}}

: Applies when the value of a specific variable contains the defined values. 

• {{^is_match "variable" "value1" "value2" }}{{/is_match}}  

: Applies when the value of a specific variable does not contain the defined values. 

• {{#is_exact_match "variable" "value1" "value2" }}{{/is_exact_match}} 

: Applies when the value of a specific variable exactly matches the defined values. 

• {{^is_exact_match "variable" "value1" "value2" }} {{/is_exact_match}}  

: Applies when the value of a specific variable does not exactly match the defined values. 

You can define multiple strings for a single variable (applied as an OR condition).
Example: {{#is_match "host.env" "dev" "stg" }} This applies when the value of host.env is either dev or stg, and you can define messages or channels accordingly.  {{/is_match}} You can use conditional variables just like if/else statements in programming.
(Both of the following patterns are valid.)

{{#is_match  "host.env" "prod"}}
    @channel_prod
{{else}}
    @channel_dev
{{/is_match}}

{{#is_match  "host.service" "zmon" "slack"}}
    @채널_zmon
{{else}}
    {{#is_match  "host.service" "datadog"}}
        @channel_datadog
    {{else}}
        @channel_etc
    {{/is_match}}
{{/is_match}}