Hi @Diogo Monteiro ,
Welcome to the community!
It totally depends upon you whether you have to pay or not!
If you are using the free version of both then you don't need to pay for the products!
Bit if you are using a paid version of the product you have to pay!
The same applies when integrating both with some third-party tool!
If you are using the free version of the integration tool you don't have to pay but if you use any paid features then you have to pay!
I'm sharing multiple resources:
You can, there is a Jira Power up for that. this is free,
You can learn more about it here;
I hope this helps
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