At any time you can change between the different Cloud plans, and switch between monthly and yearly billing.
Review your current plan
You can review your active subscriptions on the My Plans page, which can be opened anywhere on the Arduino website by clicking the button in top-right, and then My Plans.
Changing your plan
Next to your current Cloud plan, press the 'Change Plan' button.
You will be taken to the Digital Store.
You can choose between the monthly and yearly options with the switch button.
You can switch to any plan you like, except the one that's currently active with your account.
Canceling your plan
If you no longer wish to subscribe to a paid plan you can simply switch to the free plan, canceling all future charges. You will retain access to your paid features until the end of the billing cycle.
Your account information and data will not be removed. You can learn about deleting your Arduino account here.