We provide sizing and SLA specs in the "Plan Details" table on the Stardog Cloud info page (Stardog Cloud | Stardog). The only mechanism we provide in the Stardog Cloud SaaS for changing capacity is to move to a different tier of service (e.g., if you need to use more than 3 Stardog databases, then you would need to move from the Free tier to the Essentials tier). We have discussed auto-scaling, but that is not currently available.