What Does a Chief of Staff Do?
A Chief of Staff extends an executive's reach: they run the operating cadence, drive cross-functional projects, and make sure decisions actually happen. Here is what the job looks like in practice.
Read the guideThe Chief of Staff Center of Excellence
Master the Chief of Staff craft. Let AI do the busywork.
Practical guides on the role, the operating cadence, and the frameworks that make executives faster — plus Aperture, an AI workspace that turns your meeting notes and threads into briefs, action items, and answers.
What a Chief of Staff actually does
The role is a force multiplier for an executive: running the operating rhythm, driving the projects nobody owns, and making sure decisions actually happen. Our guides cover the craft across five pillars.
Understanding the Role
What a Chief of Staff actually does, how the role varies by company stage, and how it differs from adjacent roles.
Running the Operating Cadence
The meetings, reviews, and rhythms that keep an executive team aligned, and how a Chief of Staff runs them well.
Frameworks and Playbooks
Repeatable methods for decision-making, prioritization, and communication that a Chief of Staff can apply on day one.
The Career Path
How to become a Chief of Staff, what to negotiate before you start, and where the role leads next.
Using AI as a Chief of Staff
Practical ways to use AI to compress the busywork of the role: briefing, synthesis, tracking, and follow-up.
Start with these guides
Designing the Weekly Operating Cadence
The operating cadence is the heartbeat of an executive team. A practical template for what to run weekly, monthly, and quarterly, and what to cut.
Read the guideThe Decision Memo: A Framework That Ends Circular Debates
A one-to-two-page decision memo is the highest-leverage document a Chief of Staff can institutionalize. The structure, in five sections.
Read the guideBuilding an AI-Powered Daily Briefing
The morning briefing is classic Chief of Staff work, and it is now largely automatable. How to structure an AI-generated brief your principal will actually read.
Read the guideAperture: an AI Chief of Staff workspace
The mechanical half of the job — synthesis, extraction, tracking, briefing — is now automatable. Aperture does it from the notes and threads you already have.
Capture everything once
Drop in meeting notes, emails, and documents. Aperture extracts the substance automatically.
Never drop a commitment
Action items, decisions, and open questions are pulled out of every source and tracked in one place.
A brief that writes itself
Every morning, a consolidated daily brief: top priorities, pending decisions, and risks.
Ask anything you captured
An assistant that answers questions across all your sources, so prep starts from what was already said.
Speak the language
- Chief of Staff (CoS)
- A senior role that extends an executive's capacity by running the operating cadence, driving cross-functional projects, and ensuring decisions are made and executed. The CoS borrows the principal's authority rather than holding line authority.
- Principal
- The executive a Chief of Staff serves, most often a CEO, president, or division head. The CoS role is defined relative to the principal's needs and delegation.
- Operating cadence
- The recurring rhythm of meetings, reviews, and planning cycles through which a leadership team runs the business: weekly leadership meetings, monthly business reviews, and quarterly planning.
- Pre-read
- A written document circulated before a meeting containing the status, context, and proposals attendees need, so meeting time is spent on discussion and decisions rather than presentation.
- Decision memo
- A short written document, typically one to two pages, that frames a single decision: context, the question, options with trade-offs, a recommendation, and execution steps.
- Business review
- A recurring meeting, usually monthly or quarterly, where owners present performance against agreed metrics, explain variances, and commit to corrective actions.
Common questions
What does a Chief of Staff do?
A Chief of Staff extends an executive's capacity. The work typically spans four areas: running the operating cadence (leadership meetings, business reviews, planning), driving cross-functional special projects, preparing communications such as board updates, and supporting decisions by gathering context and tracking follow-through.
How is a Chief of Staff different from an Executive Assistant?
An Executive Assistant owns logistics: calendar, travel, and meeting mechanics. A Chief of Staff owns substance: agendas, decision memos, projects, and follow-through. The two roles are complementary and often work closely together.
How is a Chief of Staff different from a COO?
A COO is a line executive with direct reports and accountability for business outcomes. A Chief of Staff has no standing team or P&L; they coordinate, synthesize, and drive execution on the principal's behalf. In some companies a strong CoS eventually grows into a COO role.
What background do you need to become a Chief of Staff?
There is no single pipeline. Common feeders include consulting, banking, strategy and operations teams, product management, and internal high performers. The consistent requirements are strong writing, fast synthesis, sound judgment under ambiguity, and low ego with high standards.
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