Technically, you don’t really require anything to make a 2 tier, just configure it using configuration manager (your access file). 2 Tier connection is also possible for a Oracle, SQL Server, or any other database.
There are two ways one can migrate a 2 tier (access) based project to Excel.
1. Project duplicate using Project duplication wizard or Object manager.
2. Import the access database into your relational database (Using ETL)