SAP is one of the largest business software companies in the world, and the name is also used for its main product: a suite of ERP software that runs the core operations of big organisations. Finance, inventory, purchasing, manufacturing and HR all live in one connected system instead of in separate tools that do not talk to each other.
Think of it as the central nervous system of a large company. When a factory floor logs that it used 500 units of a raw material, SAP can update the stock count, trigger a reorder and reflect the cost in the books, all from the same record. That depth is its strength, and also why it can feel heavy: SAP installations are big, long-lived and expensive, which means they often become legacy applications that a business depends on for decades.
The flagship product line has shifted over the years, from the older R/3 to today’s S/4HANA, and many firms run a version that was customised heavily for their own processes. That customisation is exactly what makes upgrades slow and risky, so a stable SAP core tends to stay put while everything modern grows around it.
Most companies do not replace SAP; they connect to it. Modern tools, dashboards and AI features talk to SAP through its APIs, pulling data out and pushing updates back in. The data lives in SAP, the new experience lives in lighter custom systems.
At TopDevs we build the connections and custom layers that sit around systems like SAP, so a heavy core platform can still feed the modern, lighter tools your team actually wants to use.
