Summary
In this chapter, we applied the concepts learned in the previous chapters. We used a layered approach to deploy a traditional three-tier architecture. In the first layer, we applied the for_each meta-attribute to efficiently enable multiple project services using only four lines of code. We also used a data source to retrieve two special IP address ranges from Google Cloud.
In the second layer, we created a complete database. We used Terraform to generate passwords and store them in Google Cloud Secret Manager so the application layer could retrieve them. In the third layer, we used the life cycle meta-attribute to deploy new instance templates. We also showed how we can store sensitive information in the secret manager that the application code can retrieve.
Now that we have used Terraform to provision a traditional architecture, we will deploy a modern, highly scalable cloud architecture using only serverless cloud resources in the next chapter.
