Most marketing content depreciates. It gets a spike on publication, decays over a few weeks, and sits there. Compounding content does the opposite: it gains traffic and links over time. The difference is structural, not editorial.
The structure
Pick four topics you intend to own. Four, not twenty. Each gets a substantial hub page defining the topic properly, and eight to twelve supporting posts answering specific questions inside it. Every supporting post links up to its hub. The hub links down to all of them.
This works because search engines and language models both read the cluster as a signal of depth. Twelve connected posts on data protection compliance say something that twelve unconnected posts across twelve topics do not, even at identical word counts.
The anchor
Once a quarter, publish something a competitor cannot copy. A survey with real numbers. A tool. An analysis of data only you hold. This is the piece that earns links, and links are what lift the whole cluster rather than one page.
Four anchors a year is achievable for a small team. It is also roughly the minimum that produces a link profile worth having.
The twelve months
Quarter one, build hub one and six supporting posts, and run your first original-data piece. Quarter two, finish cluster one, start cluster two, second anchor. Quarter three, cluster two done, cluster three started, third anchor. Quarter four, cluster three done, fourth anchor, and audit everything published so far.
At the end you have three complete clusters and four link-earning assets, rather than 150 disconnected posts. Fewer pieces, considerably more traffic.
What breaks it
Two things, reliably. Adding topics because someone senior asked, which spreads a small team across ground it cannot own. And skipping the anchor because it is harder than writing posts, which leaves you with well-organised content nobody links to.
Protect the anchor slot in the calendar first. Everything else can slip a week.