In this section, you use Cloud Marketplace to provision a Jenkins instance. You customize this instance to use the agent image you created in the previous section.
Go to the Cloud Marketplace solution for Jenkins.
Click Launch on Compute Engine.
Change the Machine Type field to 4 vCPUs 15 GB Memory, n1-standard-4.
Machine type selection for Jenkins deployment.
Click Deploy and wait for your Jenkins instance to finish being provisioned. When it is finished, you will see:
Jenkins has been deployed.
https://cloud.google.com/solutions/using-jenkins-for-distributed-builds-on-compute- engine#installing_jenkins

M1 machine type is the one of two Memory-Optimized machine types in GCP.
https://cloud.google.com/compute/docs/machine-types

For example, batch processing jobs can run on preemptible instances. If some of those instances stop during processing, the job slows but does not completely stop. Preemptible instances complete your batch processing tasks without placing additional workload on your existing instances and without requiring you to pay full price for additional normal instances.
https://cloud.google.com/compute/docs/instances/preemptible

MongoDB Atlas is actually managed and supported by third-party service providers.
https://console.cloud.google.com/marketplace/details/gc-launcher-for-mongodb-atlas/mongodb- atlas

You can use Pub/Sub to push messages to the endpoint of your Cloud Run service, where the messages are subsequently delivered to containers as HTTP requests. You cannot use Pub/Sub pull subscriptions because Cloud Run only allocates CPU during the processing of a request.
https://cloud.google.com/run/docs/tutorials/pubsub#integrating-pubsub