The summary.
READ QUOTAS, LIMITS AND PRICING BEFORE FEATURES
They constrain design more than capability does, and they are where the surprises live.
Check the date on every piece of documentation — services change and old material remains available.
PRICE WITH A BUFFER IF YOU BILL LOCALLY AND ARE CHARGED ABROAD
A currency movement erodes margin without your usage changing at all.
Model cost per customer at realistic usage, at ten times that, and at unexpected behaviour — consumption services pass unusual usage straight to your bill.
IMPLEMENT PER-CUSTOMER LIMITS AND THE ABILITY TO DISABLE AN ACCOUNT
ACCEPT PLATFORM DEPENDENCE DELIBERATELY
Keep your data model, business logic and exportable data portable. Know how you would leave, and how long it would take.
CHOOSE REGIONS BY MEASURED LATENCY TO YOUR USERS
The nearest is not always the obvious one, and the differences are substantial.
CERTIFICATIONS FILTER APPLICATIONS AND UNLOCK PARTNER STATUS
But interviews ask what you have actually built and operated. And set budget alerts on practice projects.
