diff --git a/api/include/opentelemetry/trace/span_context_kv_iterable_view.h b/api/include/opentelemetry/trace/span_context_kv_iterable_view.h
index 6a21aaf54a..8c4584dc2e 100644
--- a/api/include/opentelemetry/trace/span_context_kv_iterable_view.h
+++ b/api/include/opentelemetry/trace/span_context_kv_iterable_view.h
@@ -24,7 +24,7 @@ namespace trace
 namespace detail
 {
 template <class T>
-inline void take_span_context_kv(SpanContext, common::KeyValueIterableView<T>)
+inline void take_span_context_kv(SpanContext, opentelemetry::common::KeyValueIterableView<T>)
 {}
 
 template <class T, nostd::enable_if_t<common::detail::is_key_value_iterable<T>::value> * = nullptr>
diff --git a/exporters/etw/include/opentelemetry/exporters/etw/etw_logger.h b/exporters/etw/include/opentelemetry/exporters/etw/etw_logger.h
index 819caf7105..d81eee21d2 100644
--- a/exporters/etw/include/opentelemetry/exporters/etw/etw_logger.h
+++ b/exporters/etw/include/opentelemetry/exporters/etw/etw_logger.h
@@ -229,7 +229,7 @@ class Logger : public opentelemetry::logs::Logger
                    opentelemetry::trace::TraceId trace_id,
                    opentelemetry::trace::SpanId span_id,
                    opentelemetry::trace::TraceFlags trace_flags,
-                   common::SystemTimestamp timestamp) noexcept
+                   opentelemetry::common::SystemTimestamp timestamp) noexcept
   {
     UNREFERENCED_PARAMETER(trace_flags);
 
@@ -358,11 +358,11 @@ class LoggerProvider : public opentelemetry::logs::LoggerProvider
   }
 
   nostd::shared_ptr<opentelemetry::logs::Logger> GetLogger(
-      nostd::string_view logger_name,
-      nostd::string_view library_name,
-      nostd::string_view version                 = "",
-      nostd::string_view schema_url              = "",
-      const common::KeyValueIterable &attributes = common::NoopKeyValueIterable()) override
+      opentelemetry::nostd::string_view logger_name,
+      opentelemetry::nostd::string_view library_name,
+      opentelemetry::nostd::string_view version                 = "",
+      opentelemetry::nostd::string_view schema_url              = "",
+      const opentelemetry::common::KeyValueIterable &attributes = opentelemetry::common::NoopKeyValueIterable()) override
   {
     UNREFERENCED_PARAMETER(library_name);
     UNREFERENCED_PARAMETER(version);
diff --git a/exporters/etw/include/opentelemetry/exporters/etw/etw_properties.h b/exporters/etw/include/opentelemetry/exporters/etw/etw_properties.h
index 3cf365c8a0..cb6a4810bc 100644
--- a/exporters/etw/include/opentelemetry/exporters/etw/etw_properties.h
+++ b/exporters/etw/include/opentelemetry/exporters/etw/etw_properties.h
@@ -195,67 +195,67 @@ class PropertyValue : public PropertyVariant
    * @brief Convert non-owning common::AttributeValue to owning PropertyValue.
    * @return
    */
-  PropertyValue &FromAttributeValue(const common::AttributeValue &v)
+  PropertyValue &FromAttributeValue(const opentelemetry::common::AttributeValue &v)
   {
     switch (v.index())
     {
-      case common::AttributeType::kTypeBool:
+      case opentelemetry::common::AttributeType::kTypeBool:
         PropertyVariant::operator=(nostd::get<bool>(v));
         break;
-      case common::AttributeType::kTypeInt:
+      case opentelemetry::common::AttributeType::kTypeInt:
         PropertyVariant::operator=(nostd::get<int32_t>(v));
         break;
-      case common::AttributeType::kTypeInt64:
+      case opentelemetry::common::AttributeType::kTypeInt64:
         PropertyVariant::operator=(nostd::get<int64_t>(v));
         break;
-      case common::AttributeType::kTypeUInt:
+      case opentelemetry::common::AttributeType::kTypeUInt:
         PropertyVariant::operator=(nostd::get<uint32_t>(v));
         break;
-      case common::AttributeType::kTypeUInt64:
+      case opentelemetry::common::AttributeType::kTypeUInt64:
         PropertyVariant::operator=(nostd::get<uint64_t>(v));
         break;
-      case common::AttributeType::kTypeDouble:
+      case opentelemetry::common::AttributeType::kTypeDouble:
         PropertyVariant::operator=(nostd::get<double>(v));
         break;
-      case common::AttributeType::kTypeCString: {
+      case opentelemetry::common::AttributeType::kTypeCString: {
         PropertyVariant::operator=(nostd::get<const char *>(v));
         break;
       }
-      case common::AttributeType::kTypeString: {
+      case opentelemetry::common::AttributeType::kTypeString: {
         PropertyVariant::operator=
             (std::string{nostd::string_view(nostd::get<nostd::string_view>(v)).data()});
         break;
       }
 
-      case common::AttributeType::kTypeSpanByte:
+      case opentelemetry::common::AttributeType::kTypeSpanByte:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const uint8_t>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanBool:
+      case opentelemetry::common::AttributeType::kTypeSpanBool:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const bool>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanInt:
+      case opentelemetry::common::AttributeType::kTypeSpanInt:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const int32_t>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanInt64:
+      case opentelemetry::common::AttributeType::kTypeSpanInt64:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const int64_t>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanUInt:
+      case opentelemetry::common::AttributeType::kTypeSpanUInt:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const uint32_t>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanUInt64:
+      case opentelemetry::common::AttributeType::kTypeSpanUInt64:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const uint64_t>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanDouble:
+      case opentelemetry::common::AttributeType::kTypeSpanDouble:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const double>>(v)));
         break;
 
-      case common::AttributeType::kTypeSpanString:
+      case opentelemetry::common::AttributeType::kTypeSpanString:
         PropertyVariant::operator=(to_vector(nostd::get<nostd::span<const nostd::string_view>>(v)));
         break;
 
@@ -269,9 +269,9 @@ class PropertyValue : public PropertyVariant
    * @brief Convert owning PropertyValue to non-owning common::AttributeValue
    * @param other
    */
-  common::AttributeValue ToAttributeValue() const
+  opentelemetry::common::AttributeValue ToAttributeValue() const
   {
-    common::AttributeValue value;
+    opentelemetry::ommon::AttributeValue value;
 
     switch (this->index())
     {
@@ -353,7 +353,7 @@ using PropertyValueMap = std::map<std::string, PropertyValue>;
 /**
  * @brief Map of PropertyValue with common::KeyValueIterable interface.
  */
-class Properties : public common::KeyValueIterable, public PropertyValueMap
+class Properties : public opentelemetry::common::KeyValueIterable, public PropertyValueMap
 {
 
   /**
@@ -404,15 +404,15 @@ class Properties : public common::KeyValueIterable, public PropertyValueMap
    * container.
    *
    */
-  Properties(const common::KeyValueIterable &other) { (*this) = other; }
+  Properties(const opentelemetry::common::KeyValueIterable &other) { (*this) = other; }
 
   /**
    * @brief PropertyValueMap assignment operator.
    */
-  Properties &operator=(const common::KeyValueIterable &other)
+  Properties &operator=(const opentelemetry::common::KeyValueIterable &other)
   {
     clear();
-    other.ForEachKeyValue([&](nostd::string_view key, common::AttributeValue value) noexcept {
+    other.ForEachKeyValue([&](nostd::string_view key, opentelemetry::common::AttributeValue value) noexcept {
       std::string k(key.data(), key.length());
       (*this)[k].FromAttributeValue(value);
       return true;
@@ -431,12 +431,12 @@ class Properties : public common::KeyValueIterable, public PropertyValueMap
    * the iteration is aborted.
    * @return true if every key-value pair was iterated over
    */
-  bool ForEachKeyValue(nostd::function_ref<bool(nostd::string_view, common::AttributeValue)>
+  bool ForEachKeyValue(nostd::function_ref<bool(nostd::string_view, opentelemetry::common::AttributeValue)>
                            callback) const noexcept override
   {
     for (const auto &kv : (*this))
     {
-      const common::AttributeValue &value = kv.second.ToAttributeValue();
+      const opentelemetry::common::AttributeValue &value = kv.second.ToAttributeValue();
       if (!callback(nostd::string_view{kv.first}, value))
       {
         return false;
diff --git a/exporters/etw/include/opentelemetry/exporters/etw/etw_provider.h b/exporters/etw/include/opentelemetry/exporters/etw/etw_provider.h
index 51cca03a60..4d7e37a98c 100644
--- a/exporters/etw/include/opentelemetry/exporters/etw/etw_provider.h
+++ b/exporters/etw/include/opentelemetry/exporters/etw/etw_provider.h
@@ -344,7 +344,7 @@ class ETWProvider
         }
 #  if HAVE_TYPE_GUID
           // TODO: consider adding UUID/GUID to spec
-        case common::AttributeType::TYPE_GUID: {
+        case opentelemetry::common::AttributeType::TYPE_GUID: {
           auto temp = nostd::get<GUID>(value);
           // TODO: add transform from GUID type to string?
           jObj[name] = temp;
diff --git a/exporters/etw/include/opentelemetry/exporters/etw/etw_tracer.h b/exporters/etw/include/opentelemetry/exporters/etw/etw_tracer.h
index 6601f850df..e87f9483c9 100644
--- a/exporters/etw/include/opentelemetry/exporters/etw/etw_tracer.h
+++ b/exporters/etw/include/opentelemetry/exporters/etw/etw_tracer.h
@@ -107,7 +107,7 @@ std::string GetName(T &t)
  * @return              Span Start timestamp
  */
 template <class T>
-common::SystemTimestamp GetStartTime(T &t)
+opentelemetry::common::SystemTimestamp GetStartTime(T &t)
 {
   return t.GetStartTime();
 }
@@ -119,7 +119,7 @@ common::SystemTimestamp GetStartTime(T &t)
  * @return             Span Stop timestamp
  */
 template <class T>
-common::SystemTimestamp GetEndTime(T &t)
+opentelemetry::common::SystemTimestamp GetEndTime(T &t)
 {
   return t.GetEndTime();
 }
@@ -161,7 +161,7 @@ void UpdateStatus(T &t, Properties &props)
  */
 
 class Tracer : public opentelemetry::trace::Tracer,
-               public std::enable_shared_from_this<trace::Tracer>
+               public std::enable_shared_from_this<opentelemetry::trace::Tracer>
 {
 
   /**
@@ -215,7 +215,7 @@ class Tracer : public opentelemetry::trace::Tracer,
       size_t idx = 0;
       std::string linksValue;
       links.ForEachKeyValue(
-          [&](opentelemetry::trace::SpanContext ctx, const common::KeyValueIterable &) {
+          [&](opentelemetry::trace::SpanContext ctx, const opentelemetry::common::KeyValueIterable &) {
             if (!linksValue.empty())
             {
               linksValue += ',';
@@ -414,7 +414,7 @@ class Tracer : public opentelemetry::trace::Tracer,
    */
   nostd::shared_ptr<opentelemetry::trace::Span> StartSpan(
       nostd::string_view name,
-      const common::KeyValueIterable &attributes,
+      const opentelemetry::common::KeyValueIterable &attributes,
       const opentelemetry::trace::SpanContextKeyValueIterable &links,
       const opentelemetry::trace::StartSpanOptions &options = {}) noexcept override
   {
@@ -425,7 +425,7 @@ class Tracer : public opentelemetry::trace::Tracer,
     Properties evtCopy = attributes;
     return StartSpan(name, evtCopy, links, options);
 #else  // OPENTELEMETRY_RTTI_ENABLED is defined
-    common::KeyValueIterable &attribs = const_cast<common::KeyValueIterable &>(attributes);
+    opentelemetry::common::KeyValueIterable &attribs = const_cast<opentelemetry::common::KeyValueIterable &>(attributes);
     Properties *evt                   = dynamic_cast<Properties *>(&attribs);
     if (evt != nullptr)
     {
@@ -491,8 +491,8 @@ class Tracer : public opentelemetry::trace::Tracer,
 
     if (sampling_result.decision == sdk::trace::Decision::DROP)
     {
-      auto noopSpan = nostd::shared_ptr<trace::Span>{
-          new (std::nothrow) trace::NoopSpan(this->shared_from_this(), std::move(spanContext))};
+      auto noopSpan = nostd::shared_ptr<opentelemetry::trace::Span>{
+          new (std::nothrow) opentelemetry::trace::NoopSpan(this->shared_from_this(), std::move(spanContext))};
       return noopSpan;
     }
 
@@ -602,9 +602,9 @@ class Tracer : public opentelemetry::trace::Tracer,
    * @return
    */
   void AddEvent(opentelemetry::trace::Span &span,
-                nostd::string_view name,
-                common::SystemTimestamp timestamp,
-                const common::KeyValueIterable &attributes) noexcept
+                opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp,
+                const opentelemetry::common::KeyValueIterable &attributes) noexcept
   {
     // If RTTI is enabled by compiler, the below code modifies the attributes object passed as arg,
     // which is sometime not desirable, set OPENTELEMETRY_NOT_USE_RTTI in application
@@ -614,7 +614,7 @@ class Tracer : public opentelemetry::trace::Tracer,
     Properties evtCopy = attributes;
     return AddEvent(span, name, timestamp, evtCopy);
 #else  // OPENTELEMETRY_RTTI_ENABLED is defined
-    common::KeyValueIterable &attribs = const_cast<common::KeyValueIterable &>(attributes);
+    opentelemetry::common::KeyValueIterable &attribs = const_cast<opentelemetry::common::KeyValueIterable &>(attributes);
     Properties *evt                   = dynamic_cast<Properties *>(&attribs);
     if (evt != nullptr)
     {
@@ -635,8 +635,8 @@ class Tracer : public opentelemetry::trace::Tracer,
    * @return
    */
   void AddEvent(opentelemetry::trace::Span &span,
-                nostd::string_view name,
-                common::SystemTimestamp timestamp,
+                opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp,
                 Properties &evt) noexcept
   {
     // TODO: respect originating timestamp. Do we need to reserve
@@ -693,8 +693,8 @@ class Tracer : public opentelemetry::trace::Tracer,
    * @return
    */
   void AddEvent(opentelemetry::trace::Span &span,
-                nostd::string_view name,
-                common::SystemTimestamp timestamp) noexcept
+                opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp) noexcept
   {
     AddEvent(span, name, timestamp, sdk::GetEmptyAttributes());
   }
@@ -728,8 +728,8 @@ class Span : public opentelemetry::trace::Span
    */
   Properties attributes_;
 
-  common::SystemTimestamp start_time_;
-  common::SystemTimestamp end_time_;
+  opentelemetry::common::SystemTimestamp start_time_;
+  opentelemetry::common::SystemTimestamp end_time_;
 
   opentelemetry::trace::StatusCode status_code_{opentelemetry::trace::StatusCode::kUnset};
   std::string status_description_;
@@ -794,13 +794,13 @@ class Span : public opentelemetry::trace::Span
    * @brief Get start time of this Span.
    * @return
    */
-  common::SystemTimestamp GetStartTime() { return start_time_; }
+  opentelemetry::common::SystemTimestamp GetStartTime() { return start_time_; }
 
   /**
    * @brief Get end time of this Span.
    * @return
    */
-  common::SystemTimestamp GetEndTime() { return end_time_; }
+  opentelemetry::common::SystemTimestamp GetEndTime() { return end_time_; }
 
   /**
    * @brief Get Span Name.
@@ -849,7 +849,7 @@ class Span : public opentelemetry::trace::Span
    * @param timestamp
    * @return
    */
-  void AddEvent(nostd::string_view name, common::SystemTimestamp timestamp) noexcept override
+  void AddEvent(nostd::string_view name, opentelemetry::common::SystemTimestamp timestamp) noexcept override
   {
     owner_.AddEvent(*this, name, timestamp);
   }
@@ -861,9 +861,9 @@ class Span : public opentelemetry::trace::Span
    * @param attributes Event attributes.
    * @return
    */
-  void AddEvent(nostd::string_view name,
-                common::SystemTimestamp timestamp,
-                const common::KeyValueIterable &attributes) noexcept override
+  void AddEvent(opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp,
+                const opentelemetry::common::KeyValueIterable &attributes) noexcept override
   {
     owner_.AddEvent(*this, name, timestamp, attributes);
   }
@@ -901,7 +901,7 @@ class Span : public opentelemetry::trace::Span
    * @param value
    * @return
    */
-  void SetAttribute(nostd::string_view key, const common::AttributeValue &value) noexcept override
+  void SetAttribute(nostd::string_view key, const opentelemetry::common::AttributeValue &value) noexcept override
   {
     // don't override fields propagated from span data.
     if (key == ETW_FIELD_NAME || key == ETW_FIELD_SPAN_ID || key == ETW_FIELD_TRACE_ID ||
diff --git a/exporters/otlp/include/opentelemetry/exporters/otlp/otlp_recordable.h b/exporters/otlp/include/opentelemetry/exporters/otlp/otlp_recordable.h
index bc505a959b..070188a0cd 100644
--- a/exporters/otlp/include/opentelemetry/exporters/otlp/otlp_recordable.h
+++ b/exporters/otlp/include/opentelemetry/exporters/otlp/otlp_recordable.h
@@ -38,17 +38,17 @@ class OtlpRecordable final : public opentelemetry::sdk::trace::Recordable
   void SetIdentity(const opentelemetry::trace::SpanContext &span_context,
                    opentelemetry::trace::SpanId parent_span_id) noexcept override;
 
-  void SetAttribute(nostd::string_view key,
+  void SetAttribute(opentelemetry::nostd::string_view key,
                     const opentelemetry::common::AttributeValue &value) noexcept override;
 
-  void AddEvent(nostd::string_view name,
-                common::SystemTimestamp timestamp,
-                const common::KeyValueIterable &attributes) noexcept override;
+  void AddEvent(opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp,
+                const opentelemetry::common::KeyValueIterable &attributes) noexcept override;
 
   void AddLink(const opentelemetry::trace::SpanContext &span_context,
-               const common::KeyValueIterable &attributes) noexcept override;
+               const opentelemetry::common::KeyValueIterable &attributes) noexcept override;
 
-  void SetStatus(trace::StatusCode code, nostd::string_view description) noexcept override;
+  void SetStatus(opentelemetry::trace::StatusCode code, nostd::string_view description) noexcept override;
 
   void SetName(nostd::string_view name) noexcept override;
 
diff --git a/exporters/zipkin/include/opentelemetry/exporters/zipkin/recordable.h b/exporters/zipkin/include/opentelemetry/exporters/zipkin/recordable.h
index 78079adee7..64894082fd 100644
--- a/exporters/zipkin/include/opentelemetry/exporters/zipkin/recordable.h
+++ b/exporters/zipkin/include/opentelemetry/exporters/zipkin/recordable.h
@@ -24,15 +24,15 @@ class Recordable final : public sdk::trace::Recordable
   void SetIdentity(const opentelemetry::trace::SpanContext &span_context,
                    opentelemetry::trace::SpanId parent_span_id) noexcept override;
 
-  void SetAttribute(nostd::string_view key,
+  void SetAttribute(opentelemetry::nostd::string_view key,
                     const opentelemetry::common::AttributeValue &value) noexcept override;
 
-  void AddEvent(nostd::string_view name,
-                common::SystemTimestamp timestamp,
-                const common::KeyValueIterable &attributes) noexcept override;
+  void AddEvent(opentelemetry::nostd::string_view name,
+                opentelemetry::common::SystemTimestamp timestamp,
+                const opentelemetry::common::KeyValueIterable &attributes) noexcept override;
 
   void AddLink(const opentelemetry::trace::SpanContext &span_context,
-               const common::KeyValueIterable &attributes) noexcept override;
+               const opentelemetry::common::KeyValueIterable &attributes) noexcept override;
 
   void SetStatus(opentelemetry::trace::StatusCode code,
                  nostd::string_view description) noexcept override;
diff --git a/sdk/include/opentelemetry/sdk/instrumentationscope/instrumentation_scope.h b/sdk/include/opentelemetry/sdk/instrumentationscope/instrumentation_scope.h
index 9bae218ba4..06c13fa2c0 100644
--- a/sdk/include/opentelemetry/sdk/instrumentationscope/instrumentation_scope.h
+++ b/sdk/include/opentelemetry/sdk/instrumentationscope/instrumentation_scope.h
@@ -129,7 +129,7 @@ class InstrumentationScope
   void SetAttribute(nostd::string_view key,
                     const opentelemetry::common::AttributeValue &value) noexcept
   {
-    attributes_[std::string(key)] = nostd::visit(common::AttributeConverter(), value);
+    attributes_[std::string(key)] = nostd::visit(opentelemetry::common::AttributeConverter(), value);
   }
 
 private:
diff --git a/sdk/include/opentelemetry/sdk/logs/batch_log_record_processor.h b/sdk/include/opentelemetry/sdk/logs/batch_log_record_processor.h
index d0b3577491..e93ebf3d6b 100644
--- a/sdk/include/opentelemetry/sdk/logs/batch_log_record_processor.h
+++ b/sdk/include/opentelemetry/sdk/logs/batch_log_record_processor.h
@@ -143,7 +143,7 @@ class BatchLogRecordProcessor : public LogRecordProcessor
   const std::chrono::milliseconds scheduled_delay_millis_;
   const size_t max_export_batch_size_;
   /* The buffer/queue to which the ended logs are added */
-  common::CircularBuffer<Recordable> buffer_;
+  opentelemetry::sdk::common::CircularBuffer<Recordable> buffer_;
 
   std::shared_ptr<SynchronizationData> synchronization_data_;
 
diff --git a/sdk/include/opentelemetry/sdk/metrics/exemplar/fixed_size_exemplar_reservoir.h b/sdk/include/opentelemetry/sdk/metrics/exemplar/fixed_size_exemplar_reservoir.h
index 76f5742ca2..16eafd381e 100644
--- a/sdk/include/opentelemetry/sdk/metrics/exemplar/fixed_size_exemplar_reservoir.h
+++ b/sdk/include/opentelemetry/sdk/metrics/exemplar/fixed_size_exemplar_reservoir.h
@@ -27,7 +27,7 @@ class FixedSizeExemplarReservoir : public ExemplarReservoir
   FixedSizeExemplarReservoir(size_t size,
                              std::shared_ptr<ReservoirCellSelector> reservoir_cell_selector,
                              std::shared_ptr<ExemplarData> (ReservoirCell::*map_and_reset_cell)(
-                                 const common::OrderedAttributeMap &attributes))
+                                 const opentelemetry::common::OrderedAttributeMap &attributes))
       : storage_(size),
         reservoir_cell_selector_(reservoir_cell_selector),
         map_and_reset_cell_(map_and_reset_cell)
@@ -96,7 +96,7 @@ class FixedSizeExemplarReservoir : public ExemplarReservoir
   std::vector<ReservoirCell> storage_;
   std::shared_ptr<ReservoirCellSelector> reservoir_cell_selector_;
   std::shared_ptr<ExemplarData> (ReservoirCell::*map_and_reset_cell_)(
-      const common::OrderedAttributeMap &attributes);
+      const opentelemetry::common::OrderedAttributeMap &attributes);
 };
 
 }  // namespace metrics
diff --git a/sdk/include/opentelemetry/sdk/metrics/exemplar/histogram_exemplar_reservoir.h b/sdk/include/opentelemetry/sdk/metrics/exemplar/histogram_exemplar_reservoir.h
index bbc032df3b..4c6103f6da 100644
--- a/sdk/include/opentelemetry/sdk/metrics/exemplar/histogram_exemplar_reservoir.h
+++ b/sdk/include/opentelemetry/sdk/metrics/exemplar/histogram_exemplar_reservoir.h
@@ -42,7 +42,7 @@ class HistogramExemplarReservoir : public FixedSizeExemplarReservoir
   HistogramExemplarReservoir(size_t size,
                              std::shared_ptr<ReservoirCellSelector> reservoir_cell_selector,
                              std::shared_ptr<ExemplarData> (ReservoirCell::*map_and_reset_cell)(
-                                 const common::OrderedAttributeMap &attributes))
+                                 const opentelemetry::common::OrderedAttributeMap &attributes))
       : FixedSizeExemplarReservoir(size, reservoir_cell_selector, map_and_reset_cell)
   {}
 
diff --git a/sdk/include/opentelemetry/sdk/metrics/exemplar/reservoir.h b/sdk/include/opentelemetry/sdk/metrics/exemplar/reservoir.h
index 258e099f0f..b74616c915 100644
--- a/sdk/include/opentelemetry/sdk/metrics/exemplar/reservoir.h
+++ b/sdk/include/opentelemetry/sdk/metrics/exemplar/reservoir.h
@@ -72,7 +72,7 @@ class ExemplarReservoir
       size_t size,
       std::shared_ptr<ReservoirCellSelector> reservoir_cell_selector,
       std::shared_ptr<ExemplarData> (ReservoirCell::*map_and_reset_cell)(
-          const common::OrderedAttributeMap &attributes));
+          const opentelemetry::common::OrderedAttributeMap &attributes));
 
   static nostd::shared_ptr<ExemplarReservoir> GetNoExemplarReservoir();
 };
diff --git a/sdk/include/opentelemetry/sdk/metrics/state/attributes_hashmap.h b/sdk/include/opentelemetry/sdk/metrics/state/attributes_hashmap.h
index 85009a9fcb..8dd820fd95 100644
--- a/sdk/include/opentelemetry/sdk/metrics/state/attributes_hashmap.h
+++ b/sdk/include/opentelemetry/sdk/metrics/state/attributes_hashmap.h
@@ -28,7 +28,7 @@ const std::string kAggregationCardinalityLimitOverflowError =
     "Maximum data points for metric stream exceeded. Entry added to overflow";
 const std::string kAttributesLimitOverflowKey = "otel.metrics.overflow";
 const bool kAttributesLimitOverflowValue      = true;
-const size_t kOverflowAttributesHash          = common::GetHashForAttributeMap(
+const size_t kOverflowAttributesHash          = opentelemetry::sdk::common::GetHashForAttributeMap(
     {{kAttributesLimitOverflowKey,
       kAttributesLimitOverflowValue}});  // precalculated for optimization
 
diff --git a/sdk/include/opentelemetry/sdk/trace/batch_span_processor.h b/sdk/include/opentelemetry/sdk/trace/batch_span_processor.h
index b93631eafa..a748b06361 100644
--- a/sdk/include/opentelemetry/sdk/trace/batch_span_processor.h
+++ b/sdk/include/opentelemetry/sdk/trace/batch_span_processor.h
@@ -143,7 +143,7 @@ class BatchSpanProcessor : public SpanProcessor
   const size_t max_export_batch_size_;
 
   /* The buffer/queue to which the ended spans are added */
-  common::CircularBuffer<Recordable> buffer_;
+  opentelemetry::sdk::common::CircularBuffer<Recordable> buffer_;
 
   std::shared_ptr<SynchronizationData> synchronization_data_;
 
diff --git a/sdk/include/opentelemetry/sdk/trace/span_data.h b/sdk/include/opentelemetry/sdk/trace/span_data.h
index 4e1a52ce5d..5ce0e34092 100644
--- a/sdk/include/opentelemetry/sdk/trace/span_data.h
+++ b/sdk/include/opentelemetry/sdk/trace/span_data.h
@@ -55,7 +55,7 @@ class SpanDataEvent
    * Get the attributes for this event
    * @return the attributes for this event
    */
-  const std::unordered_map<std::string, common::OwnedAttributeValue> &GetAttributes() const noexcept
+  const std::unordered_map<std::string, opentelemetry::common::OwnedAttributeValue> &GetAttributes() const noexcept
   {
     return attribute_map_.GetAttributes();
   }
@@ -63,7 +63,7 @@ class SpanDataEvent
 private:
   std::string name_;
   opentelemetry::common::SystemTimestamp timestamp_;
-  common::AttributeMap attribute_map_;
+  opentelemetry::common::AttributeMap attribute_map_;
 };
 
 /**
@@ -81,7 +81,7 @@ class SpanDataLink
    * Get the attributes for this link
    * @return the attributes for this link
    */
-  const std::unordered_map<std::string, common::OwnedAttributeValue> &GetAttributes() const noexcept
+  const std::unordered_map<std::string, opentelemetry::common::OwnedAttributeValue> &GetAttributes() const noexcept
   {
     return attribute_map_.GetAttributes();
   }
@@ -94,7 +94,7 @@ class SpanDataLink
 
 private:
   opentelemetry::trace::SpanContext span_context_;
-  common::AttributeMap attribute_map_;
+  opentelemetry::common::AttributeMap attribute_map_;
 };
 
 /**
@@ -210,7 +210,7 @@ class SpanData final : public Recordable
    * Get the attributes for this span
    * @return the attributes for this span
    */
-  const std::unordered_map<std::string, common::OwnedAttributeValue> &GetAttributes() const noexcept
+  const std::unordered_map<std::string, opentelemetry::common::OwnedAttributeValue> &GetAttributes() const noexcept
   {
     return attribute_map_.GetAttributes();
   }
@@ -300,7 +300,7 @@ class SpanData final : public Recordable
   std::string name_;
   opentelemetry::trace::StatusCode status_code_{opentelemetry::trace::StatusCode::kUnset};
   std::string status_desc_;
-  common::AttributeMap attribute_map_;
+  opentelemetry::common::AttributeMap attribute_map_;
   std::vector<SpanDataEvent> events_;
   std::vector<SpanDataLink> links_;
   opentelemetry::trace::SpanKind span_kind_{opentelemetry::trace::SpanKind::kInternal};
diff --git a/sdk/src/trace/span.h b/sdk/src/trace/span.h
index eb603b9025..7fe86bd3f5 100644
--- a/sdk/src/trace/span.h
+++ b/sdk/src/trace/span.h
@@ -26,7 +26,7 @@ class Span final : public opentelemetry::trace::Span
 
   ~Span() override;
 
-  // trace::Span
+  // opentelemetry::trace::Span
   void SetAttribute(nostd::string_view key,
                     const opentelemetry::common::AttributeValue &value) noexcept override;