What's the difference between Directive and Controlling PMOs?

A controlling PMO focuses on the four controlling services: governance, assessments, reviews, and audits. The primary goals of the controlling PMO are:

To ensure that the methodology, standards, processes, and tools are being used correctly

To define and direct corrective action to create ongoing improvement in project management

the directive PMO – is quite different. The directive PMO directly manages most or all projects within the organization.

I would agree with Mr. Ayoub and Mr. Yakoub ' answers ... Thank You

1. Controlling PMO: the office provides support and requires that the support be used. It can mandate specific methodologies, templates and work streams. They typically own the auditing process over projects.
2. Directive PMO: the office takes over projects, allocating its project managers to them. This approach generally ensure a high standardisation and a common process.