diff --git a/src/platform/Tizen/DnssdImpl.cpp b/src/platform/Tizen/DnssdImpl.cpp
index 0f4702dec8a5c0..8792ce52d95c34 100644
--- a/src/platform/Tizen/DnssdImpl.cpp
+++ b/src/platform/Tizen/DnssdImpl.cpp
@@ -15,21 +15,700 @@
  *    limitations under the License.
  */
 
-#include "lib/dnssd/platform/Dnssd.h"
+#include "DnssdImpl.h"
+#include "MainLoop.h"
+
+#include <algorithm>
+#include <cstring>
+#include <net/if.h>
+#include <sstream>
+
+#include <lib/support/CHIPMem.h>
+#include <lib/support/CodeUtils.h>
+#include <lib/support/SafeInt.h>
+#include <lib/support/logging/CHIPLogging.h>
+
+#include <dns-sd-internal.h>
+#include <glib.h>
 
 using namespace chip::Dnssd;
+using namespace chip::DeviceLayer::Internal;
 
 namespace {
 
+constexpr uint8_t kDnssdKeyMaxSize = 32;
+
+bool IsSupportedProtocol(DnssdServiceProtocol protocol)
+{
+    return (protocol == DnssdServiceProtocol::kDnssdProtocolUdp) || (protocol == DnssdServiceProtocol::kDnssdProtocolTcp);
+}
+
+std::string GetFullType(const char * type, DnssdServiceProtocol protocol)
+{
+    std::ostringstream typeBuilder;
+    typeBuilder << type;
+    typeBuilder << "." << (protocol == DnssdServiceProtocol::kDnssdProtocolUdp ? kCommissionProtocol : kOperationalProtocol);
+    return typeBuilder.str();
+}
+
+void RemoveContext(GenericContext * context)
+{
+    if (DnssdContexts::GetInstance().Remove(context) == CHIP_ERROR_KEY_NOT_FOUND)
+    {
+        chip::Platform::Delete(context);
+    }
+}
+
+bool CheckForSuccess(GenericContext * context, int err, const char * func, bool useCallback = false)
+{
+    if (context == nullptr)
+    {
+        ChipLogError(DeviceLayer, "%s (Dnssd context is null)", func);
+        return false;
+    }
+
+    if (err != DNSSD_ERROR_NONE)
+    {
+        ChipLogError(DeviceLayer, "%s Err(%d)", func, err);
+        if (useCallback)
+        {
+            switch (context->contextType)
+            {
+            case ContextType::Register: {
+                break;
+            }
+            case ContextType::Browse: {
+                BrowseContext * bCtx = reinterpret_cast<BrowseContext *>(context);
+                bCtx->callback(bCtx->context, nullptr, 0, CHIP_ERROR_INTERNAL);
+                break;
+            }
+            case ContextType::Resolve: {
+                ResolveContext * rCtx = reinterpret_cast<ResolveContext *>(context);
+                rCtx->callback(rCtx->context, nullptr, CHIP_ERROR_INTERNAL);
+                break;
+            }
+            }
+        }
+        RemoveContext(context);
+        return false;
+    }
+    return true;
+}
+
+CHIP_ERROR Initialize()
+{
+    int ret = dnssd_initialize();
+
+    VerifyOrReturnError(ret == DNSSD_ERROR_NONE || ret == DNSSD_ERROR_INVALID_OPERATION /* Already initialized */,
+                        CHIP_ERROR_INTERNAL);
+
+    return CHIP_NO_ERROR;
+}
+
+CHIP_ERROR UpdateTXTRecord(dnssd_service_h service, TextEntry * textEntries, size_t textEntrySize)
+{
+    ChipLogProgress(DeviceLayer, "%s", __func__);
+
+    // TODO
+    return CHIP_NO_ERROR;
+}
+
+void OnRegister(dnssd_error_e error, dnssd_service_h service, void * data)
+{
+    ChipLogDetail(DeviceLayer, "Dnssd: %s", __func__);
+    RegisterContext * rCtx = reinterpret_cast<RegisterContext *>(data);
+    GMainLoop * loop       = (GMainLoop *) rCtx->context;
+
+    g_main_loop_quit(loop);
+
+    VerifyOrReturn(CheckForSuccess(rCtx, (int) error, __func__));
+    rCtx->isRegistered = true;
+    ChipLogDetail(DeviceLayer, "Dnssd: %s name: %s, type: %s, port: %u, interfaceId: %u", __func__, rCtx->name, rCtx->type,
+                  rCtx->port, rCtx->interfaceId);
+}
+
+gboolean RegisterAsync(GMainLoop * mainLoop, gpointer userData)
+{
+    ChipLogProgress(DeviceLayer, "%s", __func__);
+
+    RegisterContext * rCtx = reinterpret_cast<RegisterContext *>(userData);
+    rCtx->context          = mainLoop;
+
+    int ret = dnssd_register_local_service(rCtx->service, OnRegister, rCtx);
+    VerifyOrReturnError(CheckForSuccess(rCtx, ret, __func__), false);
+
+    return true;
+}
+
+CHIP_ERROR RegisterService(const char * type, const char * name, uint16_t port, uint32_t interfaceId, TextEntry * textEntries,
+                           size_t textEntrySize)
+{
+    VerifyOrReturnError(type != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(textEntrySize <= kDnssdTextMaxSize, CHIP_ERROR_INVALID_ARGUMENT);
+
+    char iface[IF_NAMESIZE + 1] = {
+        0,
+    };
+    if (interfaceId > 0 && if_indextoname(interfaceId, iface) == nullptr)
+    {
+        ChipLogError(DeviceLayer, "if_indextoname() fails. errno: %d", errno);
+        return CHIP_ERROR_INTERNAL;
+    }
+
+    auto context = DnssdContexts::GetInstance().Get(type, name, port, interfaceId);
+    if (context != nullptr)
+    {
+        return UpdateTXTRecord(context->service, textEntries, textEntrySize);
+    }
+
+    ChipLogProgress(DeviceLayer, "%s type: %s, name: %s, port: %u, interfaceId: %u", __func__, type, name, port, interfaceId);
+
+    context = chip::Platform::New<RegisterContext>();
+
+    dnssd_service_h service;
+    int ret = dnssd_create_local_service(type, &service);
+    VerifyOrReturnError(CheckForSuccess(context, ret, __func__), CHIP_ERROR_INTERNAL);
+
+    ret = dnssd_service_set_name(service, name);
+    VerifyOrReturnError(CheckForSuccess(context, ret, __func__), CHIP_ERROR_INTERNAL);
+
+    ret = dnssd_service_set_port(service, port);
+    VerifyOrReturnError(CheckForSuccess(context, ret, __func__), CHIP_ERROR_INTERNAL);
+
+    if (interfaceId > 0)
+    {
+        ret = dnssd_service_set_interface(service, iface);
+        VerifyOrReturnError(CheckForSuccess(context, ret, __func__), CHIP_ERROR_INTERNAL);
+    }
+
+    for (size_t i = 0; i < textEntrySize; ++i)
+    {
+        TextEntry entry = textEntries[i];
+        if (!chip::CanCastTo<uint8_t>(entry.mDataSize))
+        {
+            RemoveContext(context);
+            return CHIP_ERROR_INVALID_ARGUMENT;
+        }
+        ret = dnssd_service_add_txt_record(service, entry.mKey, static_cast<uint8_t>(entry.mDataSize), entry.mData);
+        VerifyOrReturnError(CheckForSuccess(context, ret, __func__), CHIP_ERROR_INTERNAL);
+    }
+
+    DnssdContexts::GetInstance().Add(context, service, type, name, port, interfaceId);
+    if (MainLoop::Instance().AsyncRequest(RegisterAsync, context) == false)
+    {
+        chip::Platform::Delete(context);
+        return CHIP_ERROR_INTERNAL;
+    }
+
+    return CHIP_NO_ERROR;
+}
+
+CHIP_ERROR UnregisterAllServices()
+{
+    CHIP_ERROR err = DnssdContexts::GetInstance().Remove(ContextType::Register);
+    if (err == CHIP_ERROR_KEY_NOT_FOUND)
+        err = CHIP_NO_ERROR;
+    return err;
+}
+
+void OnBrowseAdd(BrowseContext * context, dnssd_service_h service, const char * type, const char * name, uint32_t interfaceId)
+{
+    ChipLogDetail(DeviceLayer, "Dnssd: %s  type: %s, name: %s", __func__, type, name);
+
+    char * tokens  = strdup(type);
+    char * regtype = strtok(tokens, ".");
+    chip::Inet::InterfaceId platformInterface(interfaceId);
+
+    DnssdService mdnsService = {};
+    g_strlcpy(mdnsService.mType, regtype, sizeof(mdnsService.mType));
+    g_strlcpy(mdnsService.mName, name, sizeof(mdnsService.mName));
+    mdnsService.mProtocol  = context->protocol;
+    mdnsService.mInterface = platformInterface;
+
+    context->services.push_back(mdnsService);
+    free(tokens);
+
+    dnssd_destroy_remote_service(service);
+}
+
+void OnBrowseRemove(BrowseContext * context, dnssd_service_h service, const char * type, const char * name, uint32_t interfaceId)
+{
+    ChipLogDetail(DeviceLayer, "Dnssd: %s  type: %s, name: %s, interfaceId: %u", __func__, type, name, interfaceId);
+
+    auto it = std::remove_if(
+        context->services.begin(), context->services.end(), [name, type, interfaceId](const DnssdService & mdnsService) {
+            return strcmp(name, mdnsService.mName) == 0 && type == GetFullType(mdnsService.mType, mdnsService.mProtocol) &&
+                interfaceId == mdnsService.mInterface.GetPlatformInterface();
+        });
+
+    context->services.erase(it);
+
+    dnssd_destroy_remote_service(service);
+}
+
+void StopBrowse(BrowseContext * context)
+{
+    DnssdContexts::GetInstance().Remove(context);
+}
+
+void OnBrowse(dnssd_service_state_e state, dnssd_service_h service, void * data)
+{
+    ChipLogDetail(DeviceLayer, "Dnssd: %s", __func__);
+    BrowseContext * bCtx = reinterpret_cast<BrowseContext *>(data);
+    GMainLoop * loop     = (GMainLoop *) bCtx->context;
+
+    // Always stop browsing
+    g_main_loop_quit(loop);
+
+    char * type          = nullptr;
+    char * name          = nullptr;
+    char * ifaceName     = nullptr;
+    uint32_t interfaceId = 0;
+
+    int ret = dnssd_service_get_type(service, &type);
+    VerifyOrExit(CheckForSuccess(bCtx, ret, __func__, true), );
+
+    ret = dnssd_service_get_name(service, &name);
+    VerifyOrExit(CheckForSuccess(bCtx, ret, __func__, true), );
+
+    ret = dnssd_service_get_interface(service, &ifaceName);
+    VerifyOrExit(CheckForSuccess(bCtx, ret, __func__, true), );
+    interfaceId = if_nametoindex(ifaceName);
+    VerifyOrExit(interfaceId > 0, );
+
+    ChipLogDetail(DeviceLayer, "Dnssd: %s type: %s, name: %s, interfaceId: %u", __func__, type, name, interfaceId);
+
+    if (state == DNSSD_SERVICE_STATE_AVAILABLE)
+    {
+        OnBrowseAdd(bCtx, service, type, name, interfaceId);
+    }
+    else
+    {
+        OnBrowseRemove(bCtx, service, type, name, interfaceId);
+    }
+
+    // For now, there is no way to wait for multiple services to be found.
+    // Darwin implementation just checks if kDNSServiceFlagsMoreComing is set or not,
+    // but it doesn't ensure that multiple services can be found.
+    // (In many cases, kDNSServiceFlagsMoreComing is not set)
+    if (bCtx->callback)
+    {
+        bCtx->callback(bCtx->context, bCtx->services.data(), bCtx->services.size(), CHIP_NO_ERROR);
+    }
+
+    // Darwin and Linux implementations stop browsing when a Browse Callback is invoked.
+    // I'm not sure if it is a proper operation.
+    StopBrowse(bCtx);
+
+exit:
+    g_free(type);
+    g_free(name);
+    g_free(ifaceName);
+}
+
+gboolean BrowseAsync(GMainLoop * mainLoop, gpointer userData)
+{
+    ChipLogProgress(DeviceLayer, "%s", __func__);
+
+    BrowseContext * bCtx = reinterpret_cast<BrowseContext *>(userData);
+    bCtx->context        = mainLoop;
+
+    uint32_t interfaceId = bCtx->interfaceId;
+    int ret;
+    dnssd_browser_h browser;
+    if (interfaceId == 0)
+    {
+        ret = dnssd_browse_service(bCtx->type, NULL, &browser, OnBrowse, bCtx);
+    }
+    else
+    {
+        char iface[IF_NAMESIZE + 1] = {
+            0,
+        };
+        if (interfaceId > 0 && if_indextoname(interfaceId, iface) == nullptr)
+        {
+            ChipLogError(DeviceLayer, "if_indextoname() fails. errno: %d", errno);
+            return false;
+        }
+        ret = dnssd_browse_service(bCtx->type, iface, &browser, OnBrowse, bCtx);
+    }
+
+    VerifyOrReturnError(CheckForSuccess(bCtx, ret, __func__, true), false);
+    bCtx->isBrowsing = true;
+    DnssdContexts::GetInstance().Add(bCtx, browser);
+
+    return true;
+}
+
+CHIP_ERROR Browse(uint32_t interfaceId, const char * type, DnssdServiceProtocol protocol, DnssdBrowseCallback callback,
+                  void * context)
+{
+    BrowseContext * bCtx = chip::Platform::New<BrowseContext>(protocol, type, interfaceId, callback, context);
+    if (MainLoop::Instance().AsyncRequest(BrowseAsync, bCtx) == false)
+    {
+        chip::Platform::Delete(bCtx);
+        return CHIP_ERROR_INTERNAL;
+    }
+
+    return CHIP_NO_ERROR;
+}
+
+void StopResolve(ResolveContext * context)
+{
+    DnssdContexts::GetInstance().Remove(context);
+}
+
+void ConvertTxtRecords(unsigned short txtLen, uint8_t * txtRecord, std::vector<TextEntry> & textEntries)
+{
+    if (txtLen <= 1)
+    {
+        ChipLogDetail(DeviceLayer, "Dnssd: %s No TXT records", __func__);
+        return;
+    }
+
+    const uint8_t * ptr = txtRecord;
+    const uint8_t * max = txtRecord + txtLen;
+    char key[kDnssdKeyMaxSize + 1];
+    char value[kDnssdTextMaxSize + 1];
+
+    while (ptr < max)
+    {
+        const uint8_t * const end = ptr + 1 + ptr[0];
+        if (end > max)
+        {
+            ChipLogError(DeviceLayer, "Dnssd: %s Invalid TXT data", __func__);
+            return;
+        }
+
+        char * buf = &key[0];
+        while (++ptr < end)
+        {
+            if (*ptr == '=')
+            {
+                *buf = 0;
+                buf  = &value[0];
+            }
+            else
+            {
+                *buf = *ptr;
+                ++buf;
+            }
+        }
+        *buf = 0;
+
+        auto valueLen = strlen(value);
+        auto valuePtr = reinterpret_cast<const uint8_t *>(strdup(value));
+        textEntries.push_back(TextEntry{ strdup(key), valuePtr, valueLen });
+    }
+}
+
+void OnResolve(dnssd_error_e result, dnssd_service_h service, void * data)
+{
+    ChipLogDetail(DeviceLayer, "Dnssd: %s", __func__);
+    ResolveContext * rCtx = reinterpret_cast<ResolveContext *>(data);
+    GMainLoop * loop      = (GMainLoop *) rCtx->context;
+
+    g_main_loop_quit(loop);
+
+    dnssd_cancel_resolve_service(service);
+    VerifyOrReturn(CheckForSuccess(rCtx, result, __func__, true));
+
+    char * name           = nullptr;
+    char * ipv4           = nullptr;
+    char * ipv6           = nullptr;
+    int port              = 0;
+    unsigned short txtLen = 0;
+    uint8_t * txtRecord   = nullptr;
+    std::vector<TextEntry> textEntries;
+    DnssdService mdnsService = {};
+    chip::Inet::IPAddress ipStr;
+    bool validIP = false;
+
+    int ret = dnssd_service_get_name(service, &name);
+    VerifyOrExit(CheckForSuccess(rCtx, ret, __func__, true), );
+
+    ret = dnssd_service_get_ip(service, &ipv4, &ipv6);
+    VerifyOrExit(CheckForSuccess(rCtx, ret, __func__, true), );
+
+    ret = dnssd_service_get_port(service, &port);
+    VerifyOrExit(CheckForSuccess(rCtx, ret, __func__, true), );
+
+    ret = dnssd_service_get_all_txt_record(service, &txtLen, (void **) &txtRecord);
+    ConvertTxtRecords(txtLen, txtRecord, textEntries);
+    g_free(txtRecord);
+
+    mdnsService.mPort          = (uint16_t) port;
+    mdnsService.mTextEntries   = textEntries.empty() ? nullptr : textEntries.data();
+    mdnsService.mTextEntrySize = textEntries.empty() ? 0 : textEntries.size();
+    g_strlcpy(mdnsService.mName, name, sizeof(mdnsService.mName));
+
+    // If both IPv4 and IPv6 are set, IPv6 address has higher priority.
+    if (ipv6 != nullptr)
+    {
+        validIP = chip::Inet::IPAddress::FromString(ipv6, ipStr);
+    }
+#if INET_CONFIG_ENABLE_IPV4
+    else if (ipv4 != nullptr)
+    {
+        validIP = chip::Inet::IPAddress::FromString(ipv4, ipStr);
+    }
+#endif
+
+    if (validIP)
+    {
+        mdnsService.mAddress.SetValue(ipStr);
+        rCtx->callback(rCtx->cbContext, &mdnsService, CHIP_NO_ERROR);
+        StopResolve(rCtx);
+    }
+    else
+    {
+        rCtx->callback(rCtx->cbContext, nullptr, CHIP_ERROR_INTERNAL);
+        RemoveContext(rCtx);
+    }
+
+exit:
+    g_free(name);
+    g_free(ipv4);
+    g_free(ipv6);
+}
+
+gboolean ResolveAsync(GMainLoop * mainLoop, gpointer userData)
+{
+    ChipLogProgress(DeviceLayer, "Dnssd %s", __func__);
+
+    ResolveContext * rCtx = reinterpret_cast<ResolveContext *>(userData);
+    rCtx->context         = mainLoop;
+
+    int ret = dnssd_resolve_service(rCtx->service, OnResolve, rCtx);
+    VerifyOrReturnError(CheckForSuccess(rCtx, ret, __func__), false);
+
+    rCtx->isResolving = true;
+
+    return true;
+}
+
+CHIP_ERROR Resolve(uint32_t interfaceId, const char * type, const char * name, DnssdResolveCallback callback, void * context)
+{
+    ChipLogProgress(DeviceLayer, "Dnssd %s type: %s, name: %s, interfaceId: %u", __func__, type, name, interfaceId);
+
+    ResolveContext * rCtx = chip::Platform::New<ResolveContext>(type, name, interfaceId, callback, context);
+
+    dnssd_service_h service;
+    int ret;
+
+    if (interfaceId == 0)
+    {
+        ret = dnssd_create_remote_service(type, name, NULL, &service);
+    }
+    else
+    {
+        char iface[IF_NAMESIZE + 1] = {
+            0,
+        };
+        if (interfaceId > 0 && if_indextoname(interfaceId, iface) == nullptr)
+        {
+            ChipLogError(DeviceLayer, "if_indextoname() fails. errno: %d", errno);
+            return CHIP_ERROR_INTERNAL;
+        }
+        ret = dnssd_create_remote_service(type, name, iface, &service);
+    }
+
+    VerifyOrReturnError(CheckForSuccess(rCtx, ret, __func__, true), CHIP_ERROR_INTERNAL);
+
+    DnssdContexts::GetInstance().Add(rCtx, service);
+    if (MainLoop::Instance().AsyncRequest(ResolveAsync, rCtx) == false)
+    {
+        chip::Platform::Delete(rCtx);
+        return CHIP_ERROR_INTERNAL;
+    }
+
+    return CHIP_NO_ERROR;
+}
+
 } // namespace
 
 namespace chip {
 namespace Dnssd {
 
+DnssdContexts DnssdContexts::sInstance;
+
+void DnssdContexts::Delete(GenericContext * context)
+{
+    switch (context->contextType)
+    {
+    case ContextType::Register: {
+        RegisterContext * rCtx = reinterpret_cast<RegisterContext *>(context);
+        if (rCtx->isRegistered)
+        {
+            dnssd_deregister_local_service(rCtx->service);
+            rCtx->isRegistered = false;
+        }
+        if (rCtx->service)
+        {
+            dnssd_destroy_local_service(rCtx->service);
+            rCtx->service = 0;
+        }
+        break;
+    }
+    case ContextType::Browse: {
+        BrowseContext * bCtx = reinterpret_cast<BrowseContext *>(context);
+        if (bCtx->isBrowsing)
+        {
+            dnssd_cancel_browse_service(bCtx->browser);
+            bCtx->isBrowsing = false;
+        }
+        break;
+    }
+    case ContextType::Resolve: {
+        ResolveContext * rCtx = reinterpret_cast<ResolveContext *>(context);
+        if (rCtx->isResolving)
+        {
+            dnssd_cancel_resolve_service(rCtx->service);
+            rCtx->isResolving = false;
+        }
+        break;
+    }
+    }
+
+    chip::Platform::Delete(context);
+}
+
+DnssdContexts::~DnssdContexts()
+{
+    auto iter = mContexts.cbegin();
+    while (iter != mContexts.cend())
+    {
+        Delete(*iter);
+        mContexts.erase(iter);
+    }
+}
+
+CHIP_ERROR DnssdContexts::Add(RegisterContext * context, dnssd_service_h service, const char * type, const char * name,
+                              uint16_t port, uint32_t interfaceId)
+{
+    VerifyOrReturnError(context != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(service != 0, CHIP_ERROR_INVALID_ARGUMENT);
+
+    context->service = service;
+    g_strlcpy(context->type, type, sizeof(context->type));
+    g_strlcpy(context->name, name, sizeof(context->name));
+    context->port        = port;
+    context->interfaceId = interfaceId;
+
+    mContexts.push_back(context);
+
+    return CHIP_NO_ERROR;
+}
+
+CHIP_ERROR DnssdContexts::Add(BrowseContext * context, dnssd_browser_h browser)
+{
+    VerifyOrReturnError(context != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(browser != 0, CHIP_ERROR_INVALID_ARGUMENT);
+    context->browser = browser;
+    mContexts.push_back(context);
+    return CHIP_NO_ERROR;
+}
+
+CHIP_ERROR DnssdContexts::Add(ResolveContext * context, dnssd_service_h service)
+{
+    VerifyOrReturnError(context != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    context->service = service;
+    mContexts.push_back(context);
+    return CHIP_NO_ERROR;
+}
+
+CHIP_ERROR DnssdContexts::Remove(GenericContext * context)
+{
+    ChipLogProgress(DeviceLayer, "Dnssd %s", __func__);
+    auto iter = mContexts.cbegin();
+    while (iter != mContexts.end())
+    {
+        if (*iter == context)
+        {
+            Delete(*iter);
+            mContexts.erase(iter);
+            return CHIP_NO_ERROR;
+        }
+        ++iter;
+    }
+    return CHIP_ERROR_KEY_NOT_FOUND;
+}
+
+CHIP_ERROR DnssdContexts::Remove(const char * type, const char * name, uint16_t port, uint32_t interfaceId)
+{
+    ChipLogProgress(DeviceLayer, "Dnssd %s type: %s, name %s, port: %u, interfaceId: %u", __func__, type, name, port, interfaceId);
+    for (auto iter = mContexts.begin(); iter != mContexts.end(); ++iter)
+    {
+        if ((*iter)->contextType == ContextType::Register)
+        {
+            RegisterContext * ctx = reinterpret_cast<RegisterContext *>(*iter);
+            if (strcmp(ctx->type, type) == 0 && strcmp(ctx->name, name) == 0 && ctx->port == port &&
+                ctx->interfaceId == interfaceId)
+            {
+                Delete(*iter);
+                mContexts.erase(iter);
+                return CHIP_NO_ERROR;
+            }
+        }
+    }
+    return CHIP_ERROR_KEY_NOT_FOUND;
+}
+
+CHIP_ERROR DnssdContexts::Remove(ContextType type)
+{
+    ChipLogProgress(DeviceLayer, "Dnssd %s", __func__);
+    bool found = false;
+
+    auto iter = mContexts.cbegin();
+    while (iter != mContexts.cend())
+    {
+        if ((*iter)->contextType != type)
+        {
+            ++iter;
+            continue;
+        }
+
+        Delete(*iter);
+        mContexts.erase(iter);
+        found = true;
+    }
+
+    return found ? CHIP_NO_ERROR : CHIP_ERROR_KEY_NOT_FOUND;
+}
+
+RegisterContext * DnssdContexts::Get(const char * type, const char * name, uint16_t port, uint32_t interfaceId)
+{
+    for (auto iter = mContexts.begin(); iter != mContexts.end(); ++iter)
+    {
+        if ((*iter)->contextType == ContextType::Register)
+        {
+            RegisterContext * ctx = reinterpret_cast<RegisterContext *>(*iter);
+            if (strcmp(ctx->type, type) == 0 && strcmp(ctx->name, name) == 0 && ctx->port == port &&
+                ctx->interfaceId == interfaceId)
+            {
+                return ctx;
+            }
+        }
+    }
+    return nullptr;
+}
+
 CHIP_ERROR ChipDnssdInit(DnssdAsyncReturnCallback successCallback, DnssdAsyncReturnCallback errorCallback, void * context)
 {
-    successCallback(context, CHIP_ERROR_NOT_IMPLEMENTED);
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    VerifyOrReturnError(successCallback != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(errorCallback != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+
+    ChipLogProgress(DeviceLayer, "Dnssd: %s", __func__);
+    CHIP_ERROR err = Initialize();
+    if (err == CHIP_NO_ERROR)
+    {
+        successCallback(context, CHIP_NO_ERROR);
+    }
+    else
+    {
+        errorCallback(context, CHIP_ERROR_INTERNAL);
+    }
+    return err;
 }
 
 CHIP_ERROR ChipDnssdShutdown()
@@ -39,39 +718,65 @@ CHIP_ERROR ChipDnssdShutdown()
 
 CHIP_ERROR ChipDnssdSetHostname(const char * hostname)
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    ChipLogProgress(DeviceLayer, "Dnssd: hostname %s", hostname);
+    return CHIP_NO_ERROR;
 }
 
 CHIP_ERROR ChipDnssdPublishService(const DnssdService * service)
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    VerifyOrReturnError(service != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(IsSupportedProtocol(service->mProtocol), CHIP_ERROR_INVALID_ARGUMENT);
+
+    std::string regtype = GetFullType(service->mType, service->mProtocol);
+
+    return RegisterService(regtype.c_str(), service->mName, service->mPort, service->mInterface.GetPlatformInterface(),
+                           service->mTextEntries, service->mTextEntrySize);
 }
 
 CHIP_ERROR ChipDnssdRemoveServices()
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    return UnregisterAllServices();
 }
 
 CHIP_ERROR ChipDnssdFinalizeServiceUpdate()
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    return CHIP_NO_ERROR;
 }
 
 CHIP_ERROR ChipDnssdBrowse(const char * type, DnssdServiceProtocol protocol, chip::Inet::IPAddressType addressType,
-                           chip::Inet::InterfaceId interface, DnssdBrowseCallback callback, void * context)
+                           chip::Inet::InterfaceId interfaceId, DnssdBrowseCallback callback, void * context)
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    VerifyOrReturnError(type != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(callback != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(IsSupportedProtocol(protocol), CHIP_ERROR_INVALID_ARGUMENT);
+
+    std::string regtype = GetFullType(type, protocol);
+
+    return Browse(interfaceId.GetPlatformInterface(), regtype.c_str(), protocol, callback, context);
 }
 
-CHIP_ERROR ChipDnssdResolve(DnssdService * service, chip::Inet::InterfaceId interface, DnssdResolveCallback callback,
+CHIP_ERROR ChipDnssdResolve(DnssdService * service, chip::Inet::InterfaceId interfaceId, DnssdResolveCallback callback,
                             void * context)
 {
-    return CHIP_ERROR_NOT_IMPLEMENTED;
+    VerifyOrReturnError(service != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(IsSupportedProtocol(service->mProtocol), CHIP_ERROR_INVALID_ARGUMENT);
+
+    std::string regtype = GetFullType(service->mType, service->mProtocol);
+
+    return Resolve(interfaceId.GetPlatformInterface(), regtype.c_str(), service->mName, callback, context);
 }
 
-void GetMdnsTimeout(timeval & timeout) {}
+void GetDnssdTimeout(timeval & timeout)
+{
+    // Do nothing
+    // Tizen DNS-SD API adds I/O events to GMainContext, so MainLoop::AsyncRequest will be used for DNS-SD operations
+}
 
-void HandleMdnsTimeout() {}
+void HandleDnssdTimeout()
+{
+    // Do nothing
+    // Tizen DNS-SD API adds I/O events to GMainContext, so MainLoop::AsyncRequest will be used for DNS-SD operations
+}
 
 } // namespace Dnssd
 } // namespace chip
diff --git a/src/platform/Tizen/DnssdImpl.h b/src/platform/Tizen/DnssdImpl.h
new file mode 100755
index 00000000000000..05695b7f789586
--- /dev/null
+++ b/src/platform/Tizen/DnssdImpl.h
@@ -0,0 +1,137 @@
+/*
+ *
+ *    Copyright (c) 2021 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#pragma once
+
+#include <lib/dnssd/platform/Dnssd.h>
+#include <string>
+#include <sys/param.h>
+#include <vector>
+
+#include <dns-sd.h>
+#include <glib.h>
+
+namespace chip {
+namespace Dnssd {
+
+enum class ContextType
+{
+    Register,
+    Browse,
+    Resolve,
+};
+
+struct GenericContext
+{
+    ContextType contextType;
+    void * context;
+};
+
+struct RegisterContext : public GenericContext
+{
+    dnssd_service_h service;
+    char type[kDnssdTypeMaxSize + kDnssdProtocolTextMaxSize + 1];
+    char name[Common::kInstanceNameMaxLength + 1];
+    uint16_t port;
+    uint32_t interfaceId;
+    bool isRegistered;
+
+    RegisterContext()
+    {
+        contextType  = ContextType::Register;
+        context      = nullptr;
+        service      = 0;
+        port         = 0;
+        interfaceId  = 0;
+        isRegistered = false;
+    }
+};
+
+struct BrowseContext : public GenericContext
+{
+    dnssd_browser_h browser;
+    char type[kDnssdTypeMaxSize + kDnssdProtocolTextMaxSize + 1];
+    uint32_t interfaceId;
+
+    std::vector<DnssdService> services;
+    DnssdServiceProtocol protocol;
+    bool isBrowsing;
+    DnssdBrowseCallback callback;
+    void * cbContext;
+
+    BrowseContext(DnssdServiceProtocol cbContextProtocol, const char * bType, uint32_t ifId, DnssdBrowseCallback cb, void * cbCtx)
+    {
+        contextType = ContextType::Browse;
+        protocol    = cbContextProtocol;
+        callback    = cb;
+        cbContext   = cbCtx;
+        browser     = 0;
+        g_strlcpy(type, bType, sizeof(type));
+        interfaceId = ifId;
+        isBrowsing  = false;
+    }
+};
+
+struct ResolveContext : public GenericContext
+{
+    dnssd_service_h service;
+    char type[kDnssdTypeMaxSize + kDnssdProtocolTextMaxSize + 1];
+    char name[Common::kInstanceNameMaxLength + 1];
+    uint32_t interfaceId;
+    bool isResolving;
+    DnssdResolveCallback callback;
+    void * cbContext;
+
+    ResolveContext(const char * rType, const char * rName, uint32_t interface, DnssdResolveCallback cb, void * cbCtx)
+    {
+        contextType = ContextType::Resolve;
+        g_strlcpy(type, rType, sizeof(type));
+        g_strlcpy(name, rName, sizeof(name));
+        interfaceId = interface;
+        isResolving = false;
+        callback    = cb;
+        cbContext   = cbCtx;
+    }
+};
+
+class DnssdContexts
+{
+public:
+    DnssdContexts(const DnssdContexts &) = delete;
+    DnssdContexts & operator=(const DnssdContexts &) = delete;
+    ~DnssdContexts();
+    static DnssdContexts & GetInstance() { return sInstance; }
+
+    CHIP_ERROR Add(RegisterContext * context, dnssd_service_h service, const char * type, const char * name, uint16_t port,
+                   uint32_t interfaceId);
+    CHIP_ERROR Add(BrowseContext * context, dnssd_browser_h browser);
+    CHIP_ERROR Add(ResolveContext * context, dnssd_service_h service);
+    CHIP_ERROR Remove(GenericContext * context);
+    CHIP_ERROR Remove(const char * type, const char * name, uint16_t port, uint32_t interfaceId);
+    CHIP_ERROR Remove(ContextType type);
+    RegisterContext * Get(const char * type, const char * name, uint16_t port, uint32_t interfaceId);
+
+private:
+    DnssdContexts(){};
+    static DnssdContexts sInstance;
+
+    void Delete(GenericContext * context);
+    std::vector<GenericContext *> mContexts;
+};
+
+} // namespace Dnssd
+} // namespace chip