Step 1: Gather, debug, and test sample OAuth2.0 codes in the “sample_spring” project (done).

Step 2: Migrate them to our SpringBoot project (done)

Step 3: Establish OAuth2.0 connectivity among the Authorization Server, sample Resource Server, and sample Client (done).

• #3 Authorization Server
• #4-1 sample Resource Server
• #5 OAuth2.0 Client

1-1/ Confirm the individual correct setup of the Authorization Server, sample Resource Server, and sample Client. (done)

1-2/ Confirm the correct configuration of the connections. (done)

Step 4: Enhance the PTE Resource Server (ongoing)

• #4-2 app_pte Resource Server

Step 5: Set up OAuth2.0 connectivity between the Authorization Server, PTE Resource Server, and sample Client.

• #3 Authorization Server
• #4-2 app_pte Resource Server
• #5 OAuth2.0 Client

Step 6: Establish OAuth2.0 connectivity between the Authorization Server, PTE Resource Server, and other Clients (Postman / iOS Client / Web Client).

• #3 Authorization Server
• #4-2 app_pte Resource Server
• #5 Outside Clients