How do Account Teams work and how do they differ from Opportunity Teams?

Account Teams are defined on the Account record and represent a persistent group of users who work together on that account. Each member has a team role and an access level (Read Only or Read/Write) for the account, and optionally for related contacts, opportunities, and cases. Account teams are ideal for large, strategic accounts managed by a named account team. Differences from Opportunity Teams:

1. Account teams are account-wide and persist across all associated opportunities; opportunity teams are per-opportunity.
2. Account team members can be automatically added to new opportunities created on the account.
3. Account teams do not have splits — revenue attribution is handled at the opportunity level. Use account teams to manage CRM access and relationship ownership; use opportunity teams for deal-specific collaboration and compensation splits.