IE Matrix: The Internal-External Matrix Explained With Example

By Brian Tr · Updated Oct 10, 2026

The IE matrix (Internal-External matrix) is a nine-cell portfolio tool. It plots each division of a company by two scores: internal strength from the IFE matrix on the horizontal axis, and external attractiveness from the EFE matrix on the vertical axis. Where a division lands tells you whether to grow it, hold it, or harvest or divest it.

This guide covers where the matrix comes from, how the nine cells group into three strategy regions, a step-by-step method, a worked example with made-up numbers, and a template you can copy into a spreadsheet.

Key Facts

• What it is: a 3x3 grid that positions a firm's divisions (or segments) using two weighted scores, one internal and one external.
• X axis: the IFE (Internal Factor Evaluation) total weighted score, 1.0 to 4.0.
• Y axis: the EFE (External Factor Evaluation) total weighted score, 1.0 to 4.0.
• Score bands on both axes: 1.0 to 1.99 is weak (or low), 2.0 to 2.99 is average (or medium), 3.0 to 4.0 is strong (or high).
• Three regions: grow and build (cells I, II, IV), hold and maintain (cells III, V, VII), harvest or divest (cells VI, VIII, IX).
• Origin: presented in Fred R. David's textbook Strategic Management, and based on the General Electric Business Screen.
• Best for: multidivisional companies that need to decide where each business unit sits in the portfolio.

What is the IE matrix?

The IE matrix is a strategy-formulation tool from the family of portfolio matrices. David's Strategic Management textbook describes it as a tool that positions an organization's various divisions in a nine-cell display, and notes that it was developed from the General Electric (GE) Business Screen Matrix. The textbook also compares it directly to the BCG matrix: both plot a firm's divisions in a schematic diagram, which is why both count as portfolio analysis.

Think of it as a two-question test for every business unit you run. First: how strong are we inside this unit? Second: how attractive is the world this unit sells into? The IFE and EFE matrices turn those two questions into numbers. The IE matrix puts the two numbers on one map.

That's what makes it useful for a CEO or a corporate strategy team. A single division's SWOT tells you about that division. The IE matrix lets you compare five divisions side by side and see which ones deserve more money, which ones should be left alone, and which ones are consuming attention they haven't earned.

The two inputs

• IFE score (x axis). Built from a list of internal strengths and weaknesses. Each factor gets a weight (all weights sum to 1.0) and a rating from 1 to 4. Multiply, then add up. The result falls between 1.0 and 4.0. For the full method, see the EFE and IFE matrix guide.
• EFE score (y axis). Built the same way from external opportunities and threats. Ratings show how well the division responds to each factor.

Both scores have the same range, so the grid is a clean square.

How the nine cells work

The textbook splits each axis into three bands. On the IFE axis, 1.0 to 1.99 is a weak internal position, 2.0 to 2.99 is average, and 3.0 to 4.0 is strong. The EFE axis uses the same cut points. In the standard drawing, the strongest internal scores sit on the left and the highest external scores sit at the top, so cell I is the top-left corner and cell IX is the bottom-right.

The three regions

The same textbook says that despite having nine cells, the matrix has three major regions with different strategy implications:

• Region 1, grow and build (cells I, II, IV). Intensive strategies (market penetration, market development, product development) or integrative strategies (backward, forward, horizontal integration) tend to be most appropriate. This is the best region to be in, and a healthy company aims to hold a portfolio of businesses here.
• Region 2, hold and maintain (cells III, V, VII). Market penetration and product development are the commonly used strategies for these divisions. The goal is to protect what works, not to bet big.
• Region 3, harvest or divest (cells VI, VIII, IX). Retrenchment and divestiture are the strategies attached to this region. Harvesting means pulling cash out with minimal new investment. Divesting means selling or closing the unit.

The three regions run diagonally across the grid. The top-left corner is the strongest place to be. The bottom-right corner is the weakest.

IE matrix vs BCG and GE-McKinsey

The IE matrix sits between two better-known tools. It borrows the nine-cell shape from the GE-McKinsey matrix and the portfolio purpose from the BCG matrix. The textbook lists four differences from BCG: the axes are different, the IE matrix needs more information about each division, the strategic implications differ, and it has nine cells versus four.

The textbook adds that strategists in multidivisional firms often build both a BCG matrix and an IE matrix when forming alternative strategies. A before-and-after comparison (current matrix versus projected matrix) can also help justify recommendations. If you want a deeper look at how the other two compare, read BCG vs GE-McKinsey matrix.

How to build an IE matrix, step by step

Step 1: Define your divisions

Decide what counts as a "division." It can be a product line, a geographic region, or a business unit with its own P&L. Pick one cut and stay with it. The textbook notes that firms commonly build one IE matrix by product and another by region.

Step 2: Build an IFE matrix for each division

List 8 to 12 internal factors, mixing strengths and weaknesses: market share, brand strength, cost position, product quality, cash flow, talent, systems. Assign weights that sum to 1.0. Rate each factor from 1 to 4 (a 1 means a major weakness, a 4 means a major strength). Multiply weight by rating and add up. If you haven't built one before, the EFE and IFE matrix guide walks through it.

Step 3: Build an EFE matrix for each division

List 8 to 12 external opportunities and threats: market growth, regulation, competitor moves, technology shifts, customer demand. Weight them, then rate how effectively the division responds to each (4 is a superior response, 1 is a poor one). Multiply and sum.

Step 4: Place each division on the grid

Use the IFE score for the x position and the EFE score for the y position. Then check which cell the point falls in. You can draw each division as a circle sized to its share of revenue, and shade a slice of the circle for its share of profit, the way the textbook does.

Step 5: Read the region and choose strategies

Match each division to its region. Then get specific. A cell tells you the direction, not the plan. "Grow and build" should turn into something like "enter two new regional markets" before it goes into a strategy document.

Step 6: Review the portfolio as a whole

Step back and look at the map. Are all your divisions in one corner? Is the big revenue earner sitting in a hold cell? Is cash flowing from the right places to the right places? Then repeat the exercise on a schedule, so you see which way each division is moving.

Worked example (hypothetical)

Suppose a company called Northfield Group runs five divisions. Everything below is illustrative, not real data.

First, take one division to show the arithmetic. Division B's IFE analysis uses five simplified factors:

The weights sum to 1.0 and the total, 2.70, lands in the average band (2.0 to 2.99). Run the same process on external factors and suppose Division B's EFE comes out at 3.30, which is high.

Now suppose all five divisions produced these scores:

What would a leadership team do with this?

• Divisions A, B, and C are in the grow-and-build region. Northfield would direct investment here: new markets for A, product development for B, and market penetration for C.
• Division D is in the middle. Defend its customer base, tune its costs, and don't pour in growth capital.
• Division E is in cell IX. It's weak internally and sits in an unattractive market. Northfield would look at harvesting its cash while spending as little as possible, or selling it.

Notice that the matrix doesn't make the decision. It narrows the choices and gives the team a shared picture to argue over. If Division E supplies a component the cloud business depends on, selling it may be the wrong call, and that is a judgment the grid can't make for you.

IE matrix template

Copy this into a spreadsheet. Fill in the IFE and EFE scores from your factor analyses, and the last two columns tell you where the division lands.

Band rule for both axes: below 2.0 is weak/low, 2.0 to 2.99 is average/medium, 3.0 or above is strong/high. Cell lookup: use the nine-cell table earlier in this article.

IE matrix examples by business function

The matrix was built for divisions of a multidivisional firm, but the same logic works when you treat other units as "divisions."

• Product portfolio. A consumer goods company scores each product line and discovers its flagship brand is in cell II while two older lines sit in cell VIII. That frames a conversation about reallocating marketing budget.
• Geographic regions. A services firm plots its regions. North America lands in cell I, one Southeast Asian market lands in cell IV, and a stagnant European market lands in cell VI. The plan: grow the first two, harvest the third.
• Sales and marketing channels. A marketing team scores its channels (paid search, events, partnerships) on internal capability and external demand to decide where to invest next quarter. Take care here: a small-sample channel score is rougher than a division-level one.
• Service lines in professional services. A consulting firm scores practice areas. The practice with deep expertise and fast-growing client demand goes in the grow cells. A practice with thin expertise and shrinking demand goes in the harvest cells.
• Human resources and talent. A company scores internal business units by talent strength (IFE factor) against the external talent market (EFE factor) to decide where to hire aggressively and where to hold.

Treat the non-divisional uses as rough approximations. The scoring logic holds, but the textbook's guidance on strategies assumes real business units with their own markets.

IE matrix dos and don'ts

Do

• Use the same factor list discipline for every division. Scores are only comparable if teams build them the same way.
• Get cross-functional input on weights and ratings. One strategist alone tends to bias the numbers.
• Make strategies specific. The textbook itself advises that when a particular company is known, you should propose specific strategies rather than generic terms, framed in quantitative and divisional terms where you can.
• Build a current and a projected matrix. Seeing where a division is heading matters as much as where it is today.
• Pair it with other tools. Read the grid alongside the BCG matrix and a SWOT analysis of the divisions you're worried about.

Don't

• Don't treat a score near a boundary as precise. A division with an IFE of 2.98 and one with 3.02 sit in different bands, but they aren't truly different. Look at what moves the number.
• Don't divest on the grid alone. A cell IX division might still feed cash, customers, or technology to the rest of the company.
• Don't let weights drift to justify a preferred answer. If the team wants a division to land in cell I, the weights will quietly bend. Have someone outside the division challenge them.
• Don't skip the underlying matrices. The IE matrix is only as good as the IFE and EFE lists beneath it.
• Don't use it for a single-business company. With one division, you only get one dot. A plain SWOT will serve you better.

Learn more

• EFE and IFE matrix: how to build the two scores the IE matrix depends on.
• GE-McKinsey matrix: the nine-cell screen the IE matrix descends from.
• BCG matrix: the four-box portfolio tool it is most often compared with.
• SWOT analysis: where many of the IFE and EFE factors start out.
• Ansoff matrix: helps turn a "grow and build" verdict into a specific growth route.
• QSPM: the decision-stage tool that scores the strategy options the grid points you toward.