Search Engine Land has published a detailed breakdown of Google Maps ranking, identifying 72 signals that shape local search results and mapping the architecture behind them.

The piece, titled "Inside Google Maps: 72 ranking signals and the architecture behind local search," treats the local pack as a layered system rather than a single algorithm. That framing alone shifts how practitioners should plan their work going forward.

What does the 72-signal count tell us?

A typical Google local result shows three businesses for a query like "coffee near me." Behind those three lines sits a stack of inputs. Search Engine Land's count of 72 puts a concrete number on what local SEOs have suspected for years. Ranking isn't one score. It's a system of components, each pulling a result up or down across the SERP.

That changes how practitioners should plan local visibility work. Chasing a single lever, like review count, doesn't move a business the way a coordinated push across multiple inputs does.

How does Maps ranking differ from organic search?

Google's organic algorithm and Maps algorithm run on overlapping inputs but weight them differently. Organic ranking weighs on-page content, backlinks, and authority. Maps ranking layers in distance, business information accuracy, hours of operation, and behavioral signals from searchers.

The two systems share some inputs but use them in different proportions. A business that ranks well organically doesn't automatically rank well in Maps. The 72-signal catalog from Search Engine Land shows why that gap exists in practice.

Why doesn't Google publish the formula?

Google rarely confirms specific ranking weights for any product. The company issues broad guidance through documentation and spokespeople. It doesn't release the math behind Maps ordering, leaving third parties to reverse-engineer the system.

Search Engine Land's 72-signal catalog joins a wider body of community work. That work includes patent reviews, local search experiments, and patent filings. None of these match Google's blueprint exactly, but they give the industry a working model to plan against.

How do verticals experience this differently?

Multi-location businesses and franchises face a different challenge than single-shop owners. A chain has to manage the 72-signal stack across hundreds of locations at once. An independent shop can focus locally on a smaller set of moving inputs.

Verticals where proximity dominates, like restaurants and emergency services, feel Maps ranking most directly. Verticals where reputation matters more, like law or medicine, blend Maps results with traditional organic listings. The 72-signal framework applies across both, but the implementation varies by business type.

What should SEOs monitor next?

Watch Google's own documentation for shifts in language. Google sometimes updates its guidance quietly after a high-profile third-party analysis lands. A change in wording in Google's local help docs would itself be a signal worth tracking.

Also watch how the 72-signal model holds up against observed results over the next six to twelve months. If specific signals stop correlating with ranking movement, the model needs updating.

The takeaway: Search Engine Land has put a number on what local SEOs already sensed. Local ranking is a layered system of dozens of inputs, and SEOs who plan for the stack will outpace those chasing one lever at a time.