diff --git a/include/pci_handler.hpp b/include/pci_handler.hpp
new file mode 100644
index 0000000..98a8cdc
--- /dev/null
+++ b/include/pci_handler.hpp
@@ -0,0 +1,73 @@
+#pragma once
+
+#include <stdplus/fd/managed.hpp>
+#include <stdplus/fd/mmap.hpp>
+
+#include <cstdint>
+#include <memory>
+#include <span>
+#include <vector>
+
+namespace bios_bmc_smm_error_logger
+{
+
+/**
+ * Each data transport mechanism must implement the DataInterface.
+ */
+class DataInterface
+{
+  public:
+    virtual ~DataInterface() = default;
+
+    /**
+     * Read bytes from shared buffer (blocking call).
+     *
+     * @param[in] offset - offset to read from
+     * @param[in] length - number of bytes to read
+     * @return the bytes read
+     */
+    virtual std::vector<uint8_t> read(const uint32_t offset,
+                                      const uint32_t length) = 0;
+
+    /**
+     * Write bytes to shared buffer.
+     *
+     * @param[in] offset - offset to write to
+     * @param[in] bytes - byte vector of data.
+     * @return return the byte length written
+     */
+    virtual uint32_t write(const uint32_t offset,
+                           const std::span<const uint8_t> bytes) = 0;
+
+    /**
+     * Getter for Memory Region Size
+     *
+     * @return return Memory Region size allocated
+     */
+    virtual uint32_t getMemoryRegionSize() = 0;
+};
+
+/**
+ * Data handler for reading and writing data via the PCI bridge.
+ *
+ */
+class PciDataHandler : public DataInterface
+{
+  public:
+    explicit PciDataHandler(uint32_t regionAddress, size_t regionSize,
+                            std::unique_ptr<stdplus::fd::Fd> fd);
+
+    std::vector<uint8_t> read(uint32_t offset, uint32_t length) override;
+    uint32_t write(const uint32_t offset,
+                   const std::span<const uint8_t> bytes) override;
+    uint32_t getMemoryRegionSize() override;
+
+  private:
+    uint32_t regionAddress;
+    uint32_t regionSize;
+
+    std::unique_ptr<stdplus::fd::Fd> fd;
+    stdplus::fd::MMap mmap;
+};
+
+} // namespace bios_bmc_smm_error_logger