diff --git a/src/main/java/org/prebid/server/bidder/aax/AaxBidder.java b/src/main/java/org/prebid/server/bidder/aax/AaxBidder.java
new file mode 100644
index 00000000000..3fd232428b2
--- /dev/null
+++ b/src/main/java/org/prebid/server/bidder/aax/AaxBidder.java
@@ -0,0 +1,90 @@
+package org.prebid.server.bidder.aax;
+
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.response.BidResponse;
+import com.iab.openrtb.response.SeatBid;
+import io.vertx.core.http.HttpMethod;
+import org.apache.commons.collections4.CollectionUtils;
+import org.prebid.server.bidder.Bidder;
+import org.prebid.server.bidder.model.BidderBid;
+import org.prebid.server.bidder.model.BidderError;
+import org.prebid.server.bidder.model.HttpCall;
+import org.prebid.server.bidder.model.HttpRequest;
+import org.prebid.server.bidder.model.Result;
+import org.prebid.server.json.DecodeException;
+import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.util.HttpUtil;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+public class AaxBidder implements Bidder<BidRequest> {
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public AaxBidder(String endpointUrl, JacksonMapper mapper) {
+        this.endpointUrl = HttpUtil.validateUrl(Objects.requireNonNull(endpointUrl));
+        this.mapper = Objects.requireNonNull(mapper);
+    }
+
+    @Override
+    public Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest bidRequest) {
+        return Result.withValue(HttpRequest.<BidRequest>builder()
+                .method(HttpMethod.POST)
+                .headers(HttpUtil.headers())
+                .uri(endpointUrl)
+                .body(mapper.encodeToBytes(bidRequest))
+                .payload(bidRequest)
+                .build());
+    }
+
+    @Override
+    public final Result<List<BidderBid>> makeBids(HttpCall<BidRequest> httpCall, BidRequest bidRequest) {
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            return Result.withValues(extractBids(httpCall.getRequest().getPayload(), bidResponse));
+        } catch (DecodeException e) {
+            return Result.withError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private static List<BidderBid> extractBids(BidRequest bidRequest, BidResponse bidResponse) {
+        if (bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())) {
+            return Collections.emptyList();
+        }
+
+        final String currency = bidResponse.getCur();
+        return bidResponse.getSeatbid().stream()
+                .filter(Objects::nonNull)
+                .map(SeatBid::getBid)
+                .filter(Objects::nonNull)
+                .flatMap(Collection::stream)
+                .filter(Objects::nonNull)
+                .map(bid -> BidderBid.of(bid, resolveBidType(bid.getImpid(), bidRequest.getImp()), currency))
+                .collect(Collectors.toList());
+    }
+
+    private static BidType resolveBidType(String impId, List<Imp> imps) {
+        for (Imp imp : imps) {
+            if (Objects.equals(impId, imp.getId())) {
+                if (imp.getBanner() != null) {
+                    return BidType.banner;
+                } else if (imp.getVideo() != null) {
+                    return BidType.video;
+                } else if (imp.getXNative() != null) {
+                    return BidType.xNative;
+                } else if (imp.getAudio() != null) {
+                    return BidType.audio;
+                }
+            }
+        }
+
+        return BidType.banner;
+    }
+}
diff --git a/src/main/java/org/prebid/server/spring/config/bidder/AaxConfiguration.java b/src/main/java/org/prebid/server/spring/config/bidder/AaxConfiguration.java
new file mode 100644
index 00000000000..615c581adcc
--- /dev/null
+++ b/src/main/java/org/prebid/server/spring/config/bidder/AaxConfiguration.java
@@ -0,0 +1,47 @@
+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.aax.AaxBidder;
+import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.spring.config.bidder.model.BidderConfigurationProperties;
+import org.prebid.server.spring.config.bidder.util.BidderDepsAssembler;
+import org.prebid.server.spring.config.bidder.util.UsersyncerCreator;
+import org.prebid.server.spring.env.YamlPropertySourceFactory;
+import org.prebid.server.util.HttpUtil;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+import javax.validation.constraints.NotBlank;
+
+@Configuration
+@PropertySource(value = "classpath:/bidder-config/aax.yaml", factory = YamlPropertySourceFactory.class)
+public class AaxConfiguration {
+
+    private static final String BIDDER_NAME = "aax";
+    private static final String EXTERNAL_URL_MACRO = "{{PREBID_SERVER_ENDPOINT}}";
+
+    @Bean("aaxConfigurationProperties")
+    @ConfigurationProperties("adapters.aax")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps aaxBidderDeps(BidderConfigurationProperties aaxConfigurationProperties,
+                                  @NotBlank @Value("${external-url}") String externalUrl,
+                                  JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(aaxConfigurationProperties)
+                .usersyncerCreator(UsersyncerCreator.create(externalUrl))
+                .bidderCreator(config -> new AaxBidder(resolveEndpoint(config.getEndpoint(), externalUrl), mapper))
+                .assemble();
+    }
+
+    private String resolveEndpoint(String configEndpoint, String externalUrl) {
+        return configEndpoint.replace(EXTERNAL_URL_MACRO, HttpUtil.encodeUrl(externalUrl));
+    }
+}
diff --git a/src/main/resources/bidder-config/aax.yaml b/src/main/resources/bidder-config/aax.yaml
new file mode 100644
index 00000000000..e6bda296d94
--- /dev/null
+++ b/src/main/resources/bidder-config/aax.yaml
@@ -0,0 +1,21 @@
+adapters:
+  aax:
+    endpoint: https://prebid.aaxads.com/rtb/pb/aax-prebid?src={{PREBID_SERVER_ENDPOINT}}
+    meta-info:
+      maintainer-email: product@aax.media
+      app-media-types:
+        - banner
+        - video
+        - native
+      site-media-types:
+        - banner
+        - video
+        - native
+      supported-vendors:
+      vendor-id: 720
+    usersync:
+      url: https://c.aaxads.com/aacxc.php?fv=1&wbsh=psa&ryvlg=setstatuscode&redirect=
+      redirect-url: /setuid?bidder=aax&gdpr={{gdpr}}&gdpr_consent={{gdpr_consent}}&us_privacy={{us_privacy}}&uid=<vsid>
+      cookie-family-name: aax
+      type: redirect
+      support-cors: false
diff --git a/src/main/resources/static/bidder-params/aax.json b/src/main/resources/static/bidder-params/aax.json
new file mode 100644
index 00000000000..83cdfc59406
--- /dev/null
+++ b/src/main/resources/static/bidder-params/aax.json
@@ -0,0 +1,20 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Aax Adapter Params",
+  "description": "A schema which validates params accepted by the Aax adapter",
+  "type": "object",
+  "properties": {
+    "cid": {
+      "type": "string",
+      "description": "The customer id provided by AAX."
+    },
+    "crid": {
+      "type": "string",
+      "description": "The placement id provided by AAX."
+    }
+  },
+  "required": [
+    "cid",
+    "crid"
+  ]
+}
diff --git a/src/test/java/org/prebid/server/bidder/aax/AaxBidderTest.java b/src/test/java/org/prebid/server/bidder/aax/AaxBidderTest.java
new file mode 100644
index 00000000000..2ec81cc06c9
--- /dev/null
+++ b/src/test/java/org/prebid/server/bidder/aax/AaxBidderTest.java
@@ -0,0 +1,145 @@
+package org.prebid.server.bidder.aax;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.response.Bid;
+import com.iab.openrtb.response.BidResponse;
+import com.iab.openrtb.response.SeatBid;
+import org.junit.Before;
+import org.junit.Test;
+import org.prebid.server.VertxTest;
+import org.prebid.server.bidder.model.BidderBid;
+import org.prebid.server.bidder.model.BidderError;
+import org.prebid.server.bidder.model.HttpCall;
+import org.prebid.server.bidder.model.HttpRequest;
+import org.prebid.server.bidder.model.HttpResponse;
+import org.prebid.server.bidder.model.Result;
+import org.prebid.server.proto.openrtb.ext.ExtPrebid;
+
+import java.util.List;
+import java.util.function.Function;
+
+import static java.util.Collections.singletonList;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.prebid.server.proto.openrtb.ext.response.BidType.banner;
+
+public class AaxBidderTest extends VertxTest {
+
+    private static final String ENDPOINT_URL = "https://test.aax.net?src=external.prebidserver.com";
+
+    private AaxBidder aaxBidder;
+
+    @Before
+    public void setup() {
+        aaxBidder = new AaxBidder(ENDPOINT_URL, jacksonMapper);
+    }
+
+    @Test
+    public void creationShouldFailOnInvalidEndpointUrl() {
+        assertThatIllegalArgumentException()
+                .isThrownBy(() -> new AaxBidder("invalid_url", jacksonMapper));
+    }
+
+    @Test
+    public void makeHttpRequestsShouldNotModifyIncomingRequest() {
+        // given
+        final BidRequest bidRequest = givenBidRequest();
+
+        // when
+        final Result<List<HttpRequest<BidRequest>>> result;
+        result = aaxBidder.makeHttpRequests(bidRequest);
+
+        // then
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getValue()).hasSize(1)
+                .extracting(httpRequest -> mapper.readValue(httpRequest.getBody(), BidRequest.class))
+                .containsExactly(bidRequest);
+    }
+
+    @Test
+    public void makeBidsShouldReturnErrorIfResponseBodyCouldNotBeParsed() {
+        // given
+        final HttpCall<BidRequest> httpCall = sampleHttpCall(givenBidRequest(), "invalid response");
+
+        // when
+        final Result<List<BidderBid>> result = aaxBidder.makeBids(httpCall, null);
+
+        // then
+        assertThat(result.getErrors()).hasSize(1)
+                .allMatch(error -> error.getType() == BidderError.Type.bad_server_response
+                        && error.getMessage().startsWith("Failed to decode: Unrecognized token"));
+    }
+
+    @Test
+    public void makeBidsShouldReturnEmptyListIfBidResponseIsNull() throws JsonProcessingException {
+        // given
+        final HttpCall<BidRequest> httpCall;
+        httpCall = sampleHttpCall(givenBidRequest(), mapper.writeValueAsString(null));
+
+        // when
+        final Result<List<BidderBid>> result = aaxBidder.makeBids(httpCall, null);
+
+        // then
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getValue()).isEmpty();
+    }
+
+    @Test
+    public void makeBidsShouldReturnEmptyListIfBidResponseSeatBidIsNull() throws JsonProcessingException {
+        // given
+        final HttpCall<BidRequest> httpCall;
+        httpCall = sampleHttpCall(null, mapper.writeValueAsString(BidResponse.builder().build()));
+
+        // when
+        final Result<List<BidderBid>> result = aaxBidder.makeBids(httpCall, null);
+
+        // then
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getValue()).isEmpty();
+    }
+
+    @Test
+    public void makeBidsShouldReturnBannerBidIfBannerIsPresent() throws JsonProcessingException {
+        // given
+        final HttpCall<BidRequest> httpCall = sampleHttpCall(
+                givenBidRequest(),
+                mapper.writeValueAsString(sampleBidResponse(bidBuilder -> bidBuilder.impid("123"))));
+
+        // when
+        final Result<List<BidderBid>> result = aaxBidder.makeBids(httpCall, null);
+
+        // then
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getValue())
+                .containsExactly(BidderBid.of(Bid.builder().impid("123").build(), banner, "USD"));
+    }
+
+    private static BidResponse sampleBidResponse(Function<Bid.BidBuilder,
+            Bid.BidBuilder> bidCustomizer) {
+        return BidResponse.builder()
+                .cur("USD")
+                .seatbid(singletonList(SeatBid.builder()
+                        .bid(singletonList(bidCustomizer.apply(Bid.builder()).build()))
+                        .build()))
+                .build();
+    }
+
+    private static HttpCall<BidRequest> sampleHttpCall(BidRequest bidRequest, String body) {
+        return HttpCall.success(
+                HttpRequest.<BidRequest>builder().payload(bidRequest).build(),
+                HttpResponse.of(200, null, body),
+                null);
+    }
+
+    private static BidRequest givenBidRequest() {
+        return BidRequest.builder()
+                .id("request_id")
+                .imp(singletonList(Imp.builder()
+                        .id("imp_id")
+                        .ext(mapper.valueToTree(ExtPrebid.of(null, mapper.createObjectNode())))
+                        .build()))
+                .build();
+    }
+}
diff --git a/src/test/java/org/prebid/server/it/AaxTest.java b/src/test/java/org/prebid/server/it/AaxTest.java
new file mode 100644
index 00000000000..01f4061995f
--- /dev/null
+++ b/src/test/java/org/prebid/server/it/AaxTest.java
@@ -0,0 +1,36 @@
+package org.prebid.server.it;
+
+import io.restassured.response.Response;
+import org.json.JSONException;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.prebid.server.model.Endpoint;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.io.IOException;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.equalToJson;
+import static com.github.tomakehurst.wiremock.client.WireMock.post;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlPathEqualTo;
+import static java.util.Collections.singletonList;
+
+@RunWith(SpringRunner.class)
+public class AaxTest extends IntegrationTest {
+
+    @Test
+    public void openrtb2AuctionShouldRespondWithBidsFromTheAax() throws IOException, JSONException {
+        // given
+        WIRE_MOCK_RULE.stubFor(post(urlPathEqualTo("/aax-exchange"))
+                .withRequestBody(equalToJson(jsonFrom("openrtb2/aax/test-aax-bid-request.json")))
+                .willReturn(aResponse().withBody(jsonFrom("openrtb2/aax/test-aax-bid-response.json"))));
+
+        // when
+        final Response response = responseFor("openrtb2/aax/test-auction-aax-request.json",
+                Endpoint.openrtb2_auction);
+
+        // then
+        assertJsonEquals("openrtb2/aax/test-auction-aax-response.json", response,
+                singletonList("aax"));
+    }
+}
diff --git a/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-request.json b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-request.json
new file mode 100644
index 00000000000..ba09e5f9846
--- /dev/null
+++ b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-request.json
@@ -0,0 +1,42 @@
+{
+  "id": "test-request-id",
+  "imp": [
+    {
+      "id": "test-imp-id",
+      "banner": {
+        "w": 300,
+        "h": 250
+      },
+      "ext": {
+        "bidder": {
+          "cid": "AAXCID",
+          "crid": "12345678"
+        }
+      }
+    }
+  ],
+  "site": {
+    "domain": "www.example.com",
+    "page": "http://www.example.com",
+    "publisher": {
+      "domain": "example.com"
+    },
+    "ext": {
+      "amp": 0
+    }
+  },
+  "device": {
+    "ua": "userAgent",
+    "ip": "193.168.244.1"
+  },
+  "at": 1,
+  "tmax": 5000,
+  "cur": [
+    "USD"
+  ],
+  "regs": {
+    "ext": {
+      "gdpr": 0
+    }
+  }
+}
diff --git a/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-response.json b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-response.json
new file mode 100644
index 00000000000..4b1ecda6ece
--- /dev/null
+++ b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-aax-bid-response.json
@@ -0,0 +1,22 @@
+  {
+  "id": "tid",
+  "seatbid": [
+    {
+      "seat": "aax",
+      "bid": [
+        {
+          "id": "randomid",
+          "impid": "test-imp-id",
+          "price": 0.500000,
+          "adid": "12345678",
+          "adm": "some-test-ad",
+          "cid": "987",
+          "crid": "12345678",
+          "h": 250,
+          "w": 300
+        }
+      ]
+    }
+  ],
+  "bidid": "bid01"
+}
diff --git a/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-request.json b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-request.json
new file mode 100644
index 00000000000..7e76123f01b
--- /dev/null
+++ b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-request.json
@@ -0,0 +1,24 @@
+{
+  "id": "test-request-id",
+  "imp": [
+    {
+      "id": "test-imp-id",
+      "banner": {
+        "w": 300,
+        "h": 250
+      },
+      "ext": {
+        "aax": {
+          "cid": "AAXCID",
+          "crid": "12345678"
+        }
+      }
+    }
+  ],
+  "tmax": 5000,
+  "regs": {
+    "ext": {
+      "gdpr": 0
+    }
+  }
+}
diff --git a/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-response.json b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-response.json
new file mode 100644
index 00000000000..510834b5e2e
--- /dev/null
+++ b/src/test/resources/org/prebid/server/it/openrtb2/aax/test-auction-aax-response.json
@@ -0,0 +1,38 @@
+{
+  "id": "test-request-id",
+  "seatbid": [
+    {
+      "bid": [
+        {
+          "id": "randomid",
+          "impid": "test-imp-id",
+          "price": 0.5,
+          "adm": "some-test-ad",
+          "adid": "12345678",
+          "cid": "987",
+          "crid": "12345678",
+          "w": 300,
+          "h": 250,
+          "ext": {
+            "prebid": {
+              "type": "banner"
+            },
+            "origbidcpm": 0.5
+          }
+        }
+      ],
+      "seat": "aax",
+      "group": 0
+    }
+  ],
+  "cur": "USD",
+  "ext": {
+    "responsetimemillis": {
+      "aax": "{{ aax.response_time_ms }}"
+    },
+    "prebid": {
+      "auctiontimestamp": 0
+    },
+    "tmaxrequest": 5000
+  }
+}
diff --git a/src/test/resources/org/prebid/server/it/test-application.properties b/src/test/resources/org/prebid/server/it/test-application.properties
index d9f05a99a54..825bcc910e3 100644
--- a/src/test/resources/org/prebid/server/it/test-application.properties
+++ b/src/test/resources/org/prebid/server/it/test-application.properties
@@ -288,6 +288,8 @@ adapters.yieldone.enabled=true
 adapters.yieldone.endpoint=http://localhost:8090/yieldone-exchange
 adapters.zeroclickfraud.enabled=true
 adapters.zeroclickfraud.endpoint=http://{{Host}}/zeroclickfraud-exchange?sid={{SourceId}}
+adapters.aax.enabled=true
+adapters.aax.endpoint=http://localhost:8090/aax-exchange
 http-client.circuit-breaker.enabled=true
 http-client.circuit-breaker.idle-expire-hours=24
 http-client.circuit-breaker.opening-threshold=1