There are two ways to use this mode in Windows 10. Either click on the Task View icon on the task bar (shown below and highlighted in red), or press the Win-Tab keys simultaneously.

Task Manager can help efficiently manage computer processes and increase performance. Efficiency Mode optimizes lower-priority apps for better CPU usage. Performance tab provides real-time ...

However, you can use a combination of built-in features and third-party tools to mimic Expose. Using Task View in Windows Accessing Task View: Press the Windows key + Tab to open Task View.