A strategy document is not the pile of worksheets that came before it. Rumelt (2011) argues that the kernel of a good strategy has three parts: a diagnosis that names the critical challenge, a guiding policy for dealing with it, and coherent actions that carry the policy out. Plans most often fail at the first step. They open with an ambition ("become the sensitive-skin brand everyone finds on TikTok") and never say what stands in the way. This lesson writes the diagnosis; the rest of the capstone writes the policy and the actions.

The diagnosis starts from the business, not from social: which business goals the strategy serves, over what period, and what is stopping the organisation reaching them. For Moorfield Botanics the evidence of the earlier modules points somewhere uncomfortable. The Strong Skin Season influencer programme returned +17.1% on spend on attributed orders but −29.7% on the 60% of orders estimated to be incremental (Module 7). A strategy for the following year that ignores that gap is not a strategy; one built around closing it may be.

The situation summary gives the reader the facts the diagnosis rests on: platform roles and what each is delivering, the community, the last campaign's results on both bases, the budget and the team. State what is not yet known as plainly as what is. A strategy written in November cannot know the full-year result; it should say when that number will arrive and what it would change, rather than estimate it.

Audience insight comes from Module 2: two or three insights, each with its evidence and its limits. Objectives then follow the cascade Module 1 set out. Every social objective must be traceable to a business goal and labelled brand-building, activation or community, because Binet and Field (2013) found that brand-building and activation work over different time horizons and need different measures. Where the baseline is a number the business has not yet closed, the target waits for it.

The strategy core makes four choices: where to be, how to hold a relationship with the audience, what to say, and who else says it. Each was a module in its own right; the capstone's job is to make them one argument. Porter (1996) argues that a strategy is defensible less because any single activity is excellent than because the activities fit and reinforce one another. A platform portfolio chosen for discovery, pillars chosen for saving and sharing, and creators chosen for reach alone could each pass their own module's test and still fail as a system.

Start with the platform portfolio from Module 1. Re-run it with a year's evidence: has a platform's role changed, has the team closed a content-capability gap, is there a platform to drop? Then the community: is it doing what Schau, Muñiz and Arnould (2009) describe, with members creating value for one another, or has it become a broadcast list with a membership badge? Then the content pillars from Module 3, each tied to an insight and a measure, with any pillar that rested on weak evidence now confirmed or cut.

The influencer model is where earlier results should bite hardest. Module 4 chose a tier mix on weighted criteria rather than follower counts; Module 5 showed why repeated, consistent advocacy reads as genuine preference, supporting the passionate authenticity Audrezet, de Kerviler and Moulard (2020) describe, and how an ambassador programme should be designed. A strategy says which model it keeps, which tiers it cuts and what evidence would make it change course.

Under every choice, write one evidence line: the insight, citation or result it rests on, and what that evidence cannot show. The honeycomb (Kietzmann et al., 2011) is a reason to build around conversation and reputation for a sensitive-skin audience; a single launch evaluation is a reason to change the influencer mix, but not proof that the new mix will work. A leadership team trusts a strategy that knows the difference.

Integration is where good strategies are most often lost. Module 6 defined it as complementarity rather than mere consistency: each channel does the job it is best at, and the channels reinforce one another across the decision journey (Batra and Keller, 2016). Over a year rather than a six-week launch, that means a channel-role map using RACE or See-Think-Do-Care for organic social, influencers, paid social, search, email and the owned community, and an agreed rule that the same sale is not counted by several platforms.

The calendar turns roles into time. A year usually combines always-on activity, which sustains community, content and ambassadors, with a small number of campaign peaks in which creators, paid amplification, search and email concentrate on one idea. Place each peak for a reason (a launch, a seasonal need, a moment the audience cares about) and plan backwards from it: creator content, claims sign-off and platform ad review are the slowest steps, as the critical path in Module 6's launch plan showed.

The budget is the strategy's sharpest statement, because it shows what the organisation is actually prepared to do. Start from last year's lines, show each change and the evidence for it, and make the lines add up to the total exactly. Two tests apply. Does every channel have enough to do its job well, rather than a little everywhere? And is measurement funded? A strategy that promises experiments but leaves no budget or audience for holdouts has not committed to them.

Governance names who decides. A RACI for the main decisions (moving budget between peaks, adding or exiting a creator, approving a new claim, pausing a post) prevents both orphaned decisions and decisions that need everybody. Felix, Rauschnabel and Hinsch (2017) treat structure and governance as strategic choices in social media marketing, not administration.

Compliance belongs inside the plan, not in an appendix. Carry forward the disclosure policy, permitted and forbidden claims, usage rights and monitoring from Module 5, checked against the rules in force when you write: the ASA/CAP and CMA influencers' guide (third edition, March 2023), the CMA's social media endorsements guidance for creators and brands (updated August–September 2025) under the Digital Markets, Competition and Consumers Act 2024 and, for US activity, the FTC Endorsement Guides (revised July 2023). A year-round ambassador programme multiplies the posts, Stories and codes that need checking, so scale the monitoring with it. None of this is legal advice; take it for anything novel.

A strategy asks for money; the measurement plan says how anyone will know whether it was well spent. Build it as Module 7 did: start from the objectives, then map outputs, outtakes, outcomes and impact for each, with a data source, a baseline and a reading date (AMEC, 2025). Separate the leading indicators that manage the year in flight from the lagging ones that judge it.

Then decide where the strategy needs causal evidence rather than attribution. Gordon et al. (2019) found that common observational methods often failed to reproduce experimental results and tended to overstate the effect of advertising, so any large or contested spend line should carry an incrementality test: a geo holdout for paid creator amplification, a platform lift study for a paid social flight, a randomised holdout for an email programme. Lewis and Rao (2015) are the warning about power: advertising experiments need large samples and enough time, so test fewer things properly. Write the decision rule before the results arrive: which result would increase, hold or cut the line.

The risk register lists what could knock the plan off course: a disclosure or claims breach, a creator controversy, a platform change that cuts organic reach, an experiment too small to detect an effect, a mid-year budget cut. Each risk needs a likelihood, impact, owner, preventive action and response. The roadmap phases the year with review points at which evidence can change the plan, which is what turns a document into a management tool.

Finally, the executive summary. A leadership team reads it first and sometimes only. In about a page it states the problem, the strategy in a few sentences, the budget asked for and how it differs from last year, how success will be judged and what remains uncertain. Lead with the decision you want, not the activity list. Hoffman and Fodor (2010) argued that social media return should be measured from the investments customers make in the brand, not only from what the brand spends; a summary that reports both honestly is harder to dismiss than one that promises a return it cannot support.