One employee record, or many?
The biggest win is a single source of truth for people that HR, payroll and reporting all draw from. If HR and payroll are separate systems, you'll re-key data and reconcile forever.
Localized leave and the everyday
Leave should use the Tanzanian public-holiday calendar so balances and working days are right. Attendance, onboarding, documents and performance round out the day-to-day.
Self-service people actually use
Employees and managers should self-serve on web and mobile — ideally in English and Swahili. Adoption is what makes HR software pay off.
Cloud, security and support
Cloud-based (SaaS) HR means nothing to install and always up to date, but check tenant isolation, role-based access and auditability. For most Tanzanian teams, local implementation support matters as much as the feature list.