Explanation:

Box 1: vCore
Virtual core (vCore)-based purchasing model (recommended). This purchasing model provides a choice between a provisioned compute tier and a serverless compute tier. With the provisioned compute tier, you choose the exact amount of compute resources that are always provisioned for your workload. With the serverless compute tier, you specify the autoscaling of the compute resources over a configurable compute range Box 2: An Azure SQL Database Elastic pool Azure SQL Database provides the following deployment options for a database:
* Single database represents a fully managed, isolated database.
* Elastic pool is a collection of single databases with a shared set of resources, such as CPU or memory.
Single databases can be moved into and out of an elastic pool.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/purchasing-models