Twilio has made it simple to configure and manage team access to the Twilio Console, allowing developers to easily create a single-user tenant with different API keys for production, development, and QA environments. However, this approach has limitations, such as not being able to share accounts or having all information accessible to a single user. Larger organizations can benefit from using multi-user tenants with separate access permissions, but even these setups have limitations, including no way to prevent administrators from gaining access to production API keys. To securely isolate tiers within Twilio, users can use the Subaccount feature, which allows them to roll up expenses and segment access and responsibilities between users and projects. Ultimately, Twilio offers various ways for organizations to share access to their account, including single-user tenants, multi-user tenants, and Subaccounts, as well as its Enterprise Plan, which provides additional features and security measures.