Difference between l1 and l2 compliance fixlets

Hello,
what is the difference between l1 and l2 compliance fixlets ?
for example:
(L2) Ensure ‘Turn off Push To Install service’ is set to ‘Enabled’
(L1) Ensure ‘Maximum password age’ is set to ‘365 or fewer days, but not 0’

Those are the “levels of security” required by the benchmark. See Center for Internet Security (CIS) Benchmarks - Microsoft Compliance | Microsoft Learn

CIS benchmarks provide two levels of security settings:

  • Level 1 recommends essential basic security requirements that can be configured on any system and should cause little or no interruption of service or reduced functionality.
  • Level 2 recommends security settings for environments requiring greater security that could result in some reduced functionality.
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