2.3Memo, report & executive summary
The essentials in 30 seconds
- BLUF / inverted pyramid: conclusion and recommendation first, justifications after.
- Memo = inform/instruct; report = analyze/recommend; summary = condense the essentials.
- Reflex: "Summary" section at the top + clear recommendation — you write to help decide.
Running mini-case — Yasmine and the report the manager never read
Yasmine spends two days on a 6-page supplier comparison, built in the order of her thinking, recommendation buried in the conclusion. The rushed manager reads only the first page… and never decides. Yasmine rewrites: a 3-sentence "Summary" at the top, an owned recommendation, details after. This time, the decision lands the same day. We will structure this report with her.
Sequel to cases 2.1-2.2 — Yasmine moves from one-page minutes to the report that makes people decide.
1. The BLUF principle for all structured writing
Memos, reports, executive summaries: these structured documents share one requirement — deliver the key message first. This is the inverted pyramid method (or the BLUF principle, "Bottom Line Up Front").
The conclusion and recommendation come first, justifications after. The busy decision-maker gets the essentials immediately; anyone who wants to dig deeper reads on.
2. Three formats, three purposes
Each format has its own codes: a memo briefly informs or instructs on an already-made decision. A report analyzes a situation and leads to argued recommendations.
An executive summary faithfully condenses a large topic, surfacing the essentials for a reader who doesn't have time to go through everything.
3. Structuring to help decisions get made
All of them benefit from a visible structure (headings, sections) and a clear recommendation. You don't write to show you worked, but to help someone decide — the ultimate quality criterion for this kind of writing.
The detailed body and appendices serve those who want to go deeper; the opening summary must stand on its own for a busy reader.
🔎 Concrete example — A summary at the top of a report
First paragraph of a 6-page report on choosing a new vendor.
Summary: we recommend selecting Vendor B, despite an 8% higher price, for its delivery reliability (98% OTIF vs. 82% for A) and its geographic proximity, which reduces logistics risk. Full analysis below.Effect: even without reading all 6 pages, the decision-maker already knows what to decide.
Section vocabulary
- Inverted pyramid / BLUF
- A structure that puts the conclusion and recommendation up front, ahead of the details and evidence.
Simple example: the 3-sentence "Summary" at the top of Yasmine's report.
What it is not: keeping suspense until the final conclusion (novel order).
Reflex: write the conclusion BEFORE the body — then check it stands alone.
- Memo
- A brief, official internal communication: informs of a decision or instructs a procedure.
Simple example: Yasmine posts the memo announcing the chosen supplier and the procedure.
What it is not: an analysis report with options and recommendation (different format, different function).
Reflex: 1 decision already made + 1 clear instruction = memo, not report.
- Report
- An analytical document: presents a situation, studies it, and leads to argued recommendations.
Simple example: Yasmine's 6-page comparison: analysis of offers A and B + recommendation.
What it is not: a description with no analysis or proposed action.
Reflex: no report without a clear, owned recommendation.
- Executive summary
- A faithful condensation of a large topic or set of documents, surfacing the essentials.
Simple example: the 3 "Summary" sentences condensing 6 pages for the rushed manager.
What it is not: a disguised personal opinion that distorts the summarized content.
Reflex: faithful to the content + essentials only: nothing added, nothing betrayed.
- Recommendation
- The clear course of action that follows from the analysis: the true added value of a report.
Simple example: "choose supplier B" — clear, owned, quantified (98% OTIF vs. 82%).
What it is not: listing three options without deciding, leaving the decision-maker alone.
Reflex: phrase "I recommend…" in one sentence, before any detail.
In practice — Structuring a document with the inverted pyramid
- Pick a topic to report on. Write your conclusion and recommendation first, in 2-3 sentences.
- Place them right at the top, under a clear title and a possible "Summary" section.
- Organize the rest into visible sections (context, analysis, options), from most to least important.
- Run the busy decision-maker test: reading only the first lines, do they know what to decide?
Ready-to-use script — announcing a recommendation aloud (30s)
"Let me sum up in 3 sentences: I recommend supplier B despite a slightly higher price, for its delivery reliability and proximity. The detailed figures are in the report — but if you had to remember one thing: it's B. Shall we validate?"
BLUF aloud too: recommendation first, details after, validation question to finish.
Copy-paste template — BLUF memo outline
MEMO — SUBJECT: _______________ | DATE: _______________ | FROM: _______________
SUMMARY (2-3 sentences: decision + what's expected): _______________
CONTEXT (brief reminder): _______________
INSTRUCTION / NEXT STEPS: 1) _______________ 2) _______________
CONTACT FOR QUESTIONS: _______________
TEST: does a rushed reader know what to do after the first 3 lines? [yes / no]Small business / tight budget
No 6-page report: a 5-line "Summary" email (decision + why + next step) serves as the memo.
Algerian SME
Decision involving currency or imports: recommendation + quantified logistics risk at the top — the manager decides on concrete facts.
Long report
Beyond 3 pages: a one-page summary at the top (executive summary) + detailed body + appendices for those who want depth.
Urgent memo
Immediate instruction (breakdown, client delay): explicit subject + instruction on the first line, context after — not the reverse.
✓ Best practices
- Systematically write a 2-3 sentence "Summary" section at the top of any document longer than one page.
- State a clear, committed recommendation rather than listing options without deciding.
- Use visible headings and subheadings so the document can be scanned as well as read.
✗ Common pitfalls
- Following the chronological order of your own thinking rather than the order of importance for the reader.
- Burying the recommendation in the final conclusion, after several pages of analysis.
- Writing a report that never actually takes a stance, leaving the decision-maker without clear direction.
Key takeaways
- Key message and recommendation FIRST (inverted pyramid / BLUF).
- Memo = inform/instruct; report = analyze/recommend; summary = condense.
- Visible structure: headings and sections, from most to least important.
- A report's value is its clear recommendation, not its length.
48h Challenge — apply tomorrow
Take 1 real piece of writing over one page (or a topic to report on) and add a 3-sentence "Summary" at the top with the outline above. Run the rushed-decision-maker test on a colleague.
- I explain BLUF in one sentence (key message first).
- I tell memo, report and summary apart by function.
- I've done the 48h challenge or scheduled its date.
Frequently asked questions
Doesn't putting the conclusion first ruin the "suspense"?
Professional writing isn't a novel: the reader wants to know, not be kept in suspense. Giving the conclusion right away respects their time and lets them decide whether to read the details. It's the norm in effective organizations.
How long should a report be?
As short as possible, as long as necessary. A one-page summary at the top (executive summary) covers the essentials; the detailed body and appendices serve those who want to go deeper. No one has ever complained a report was too clear or too concise.
What is the "inverted pyramid" (BLUF)?