Your marketing department wants to send out a promotional email campaign. The development team wants to minimize direct operation management. They project a wide range of possible customer responses, from 100 to 500,000 click-through per day. The link leads to a simple website that explains the promotion and collects user information and preferences. Which infrastructure should you recommend? (Choose two.)

The marketing campaign requires an infrastructure that can handle a wide range of traffic (100 to 500,000 click-throughs daily) with minimal operational management. Google App Engine (Standard or Flexible) is a fully managed platform-as-a-service (PaaS) that automatically scales to meet demand, eliminating the need for server management. Google Cloud Datastore is a NoSQL document database that also scales automatically and requires minimal administration, making it suitable for storing user information and preferences with variable access patterns. Alternatively, a managed instance group (MIG) provides auto-scaling for Compute Engine instances, ensuring the website can handle fluctuating traffic. Google Cloud Bigtable is a fully managed, high-performance NoSQL wide-column database ideal for large analytical and operational workloads, offering excellent scalability for user data. A Google Container Engine (GKE) cluster with persistent disk for data storage would require more operational management than App Engine or Bigtable, as you'd manage Kubernetes and persistent disk provisioning. A single Compute Engine VM with Cloud SQL would not scale to handle the projected traffic spikes and would require manual intervention to scale.