diff --git a/api/include/opentelemetry/trace/default_span.h b/api/include/opentelemetry/trace/default_span.h
index 1677a32ea5..00ab55049b 100644
--- a/api/include/opentelemetry/trace/default_span.h
+++ b/api/include/opentelemetry/trace/default_span.h
@@ -21,6 +21,8 @@ namespace trace
 class DefaultSpan : public Span
 {
 public:
+  ~DefaultSpan() noexcept override = default;
+
   // Returns an invalid span.
   static DefaultSpan GetInvalid() { return DefaultSpan(SpanContext::GetInvalid()); }
 
@@ -66,8 +68,21 @@ class DefaultSpan : public Span
   DefaultSpan(SpanContext span_context) noexcept : span_context_(std::move(span_context)) {}
 
   // movable and copiable
-  DefaultSpan(DefaultSpan &&spn) noexcept : Span(), span_context_(spn.GetContext()) {}
-  DefaultSpan(const DefaultSpan &spn) noexcept : Span(), span_context_(spn.GetContext()) {}
+  DefaultSpan(const DefaultSpan &spn) noexcept : span_context_(spn.span_context_) {}
+
+  DefaultSpan &operator=(const DefaultSpan &spn)
+  {
+    span_context_ = spn.span_context_;
+    return *this;
+  }
+
+  DefaultSpan(DefaultSpan &&spn) noexcept : span_context_(std::move(spn.span_context_)) {}
+
+  DefaultSpan &operator=(DefaultSpan &&spn) noexcept
+  {
+    span_context_ = std::move(spn.span_context_);
+    return *this;
+  }
 
 private:
   SpanContext span_context_;
diff --git a/api/include/opentelemetry/trace/span_context.h b/api/include/opentelemetry/trace/span_context.h
index a1948231bd..54ce38c021 100644
--- a/api/include/opentelemetry/trace/span_context.h
+++ b/api/include/opentelemetry/trace/span_context.h
@@ -51,8 +51,6 @@ class SpanContext final
         trace_state_(std::move(trace_state))
   {}
 
-  SpanContext(const SpanContext &ctx) = default;
-
   // @returns whether this context is valid
   bool IsValid() const noexcept { return trace_id_.IsValid() && span_id_.IsValid(); }
 
@@ -79,8 +77,6 @@ class SpanContext final
            trace_flags() == that.trace_flags();
   }
 
-  SpanContext &operator=(const SpanContext &ctx) = default;
-
   bool IsRemote() const noexcept { return is_remote_; }
 
   static SpanContext GetInvalid() noexcept { return SpanContext(false, false); }
diff --git a/api/include/opentelemetry/trace/span_context_kv_iterable.h b/api/include/opentelemetry/trace/span_context_kv_iterable.h
index aed3474272..0cd92bd6ea 100644
--- a/api/include/opentelemetry/trace/span_context_kv_iterable.h
+++ b/api/include/opentelemetry/trace/span_context_kv_iterable.h
@@ -18,7 +18,12 @@ namespace trace
 class SpanContextKeyValueIterable
 {
 public:
-  virtual ~SpanContextKeyValueIterable() = default;
+  SpanContextKeyValueIterable()                                               = default;
+  virtual ~SpanContextKeyValueIterable()                                      = default;
+  SpanContextKeyValueIterable(const SpanContextKeyValueIterable &)            = default;
+  SpanContextKeyValueIterable &operator=(const SpanContextKeyValueIterable &) = default;
+  SpanContextKeyValueIterable(SpanContextKeyValueIterable &&)                 = default;
+  SpanContextKeyValueIterable &operator=(SpanContextKeyValueIterable &&)      = default;
 
   /**
    * Iterate over SpanContext/key-value pairs
diff --git a/api/include/opentelemetry/trace/tracer.h b/api/include/opentelemetry/trace/tracer.h
index ab09843526..8ce6d6ed0e 100644
--- a/api/include/opentelemetry/trace/tracer.h
+++ b/api/include/opentelemetry/trace/tracer.h
@@ -27,7 +27,13 @@ namespace trace
 class Tracer
 {
 public:
-  virtual ~Tracer() = default;
+  Tracer()                          = default;
+  virtual ~Tracer()                 = default;
+  Tracer(const Tracer &)            = default;
+  Tracer &operator=(const Tracer &) = default;
+  Tracer(Tracer &&)                 = default;
+  Tracer &operator=(Tracer &&)      = default;
+
   /**
    * Starts a span.
    *
diff --git a/api/include/opentelemetry/trace/tracer_provider.h b/api/include/opentelemetry/trace/tracer_provider.h
index 059298d395..222b77f6bd 100644
--- a/api/include/opentelemetry/trace/tracer_provider.h
+++ b/api/include/opentelemetry/trace/tracer_provider.h
@@ -21,7 +21,12 @@ class Tracer;
 class OPENTELEMETRY_EXPORT TracerProvider
 {
 public:
-  virtual ~TracerProvider() = default;
+  TracerProvider()                                  = default;
+  virtual ~TracerProvider()                         = default;
+  TracerProvider(const TracerProvider &)            = default;
+  TracerProvider &operator=(const TracerProvider &) = default;
+  TracerProvider(TracerProvider &&)                 = default;
+  TracerProvider &operator=(TracerProvider &&)      = default;
 
 #if OPENTELEMETRY_ABI_VERSION_NO >= 2