The correct answer is B . If the identity provider supports both SSO and SCIM, both should be configured before launch. SSO provides secure authentication and allows users to access Slack through the organization’s identity system. SCIM supports automated user provisioning and deprovisioning, which is essential for launch readiness, user lifecycle management, and administrative efficiency. Option A is incomplete because SSO alone handles authentication but does not automate provisioning. Option C delays SCIM until after launch, which creates avoidable manual work and may produce onboarding inconsistencies. Option D is also incomplete because SCIM provisioning without SSO does not fully satisfy secure login and access requirements. For a first-time Slack launch, identity configuration is not optional cleanup work; it is foundational launch infrastructure. Configuring both SSO and SCIM before launch gives admins control over who gets access, reduces manual invites, supports lifecycle governance, and prevents avoidable access issues during rollout.

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