diff --git a/.travis.yml b/.travis.yml
index 182617f11..bb1d859cd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,34 +1,48 @@
 language: c
 
+# Default test platform: Ubuntu Trusty with sudo support.
 os: linux
 dist: trusty
 sudo: required
 
-env:
-  matrix:
-    - OPTS="--check-signed-off-travis --check-cppcheck --check-doxygen --check-vera --check-license --check-magic-strings"
-    - OPTS="--jerry-debugger"
-    - OPTS="--jerry-tests --jerry-test-suite"
-    - OPTS="--jerry-tests --jerry-test-suite --toolchain=cmake/toolchain_linux_armv7l.cmake" TIMEOUT=300 INSTALL_QEMU_ARM=yes
-    - OPTS="--buildoption-test"
-    - OPTS="--jerry-tests --jerry-test-suite --buildoptions=--jerry-libc=off,--compile-flag=-m32,--cpointer-32bit=on"
-    - OPTS="--unittests"
-    - OPTS="--unittests --buildoptions=--cmake-param=-DFEATURE_INIT_FINI=ON"
-    - OPTS="--test262"
-    - OPTS="--check-pylint"
-  global:
-    # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
-    #   via the "travis encrypt" command using the project repo's public key
-    - secure: "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"
+# Default dependency installation step #1: install dependencies for linux.
+# Other platforms can change this by redefining the 'before_install' stage in
+# the matrix below.
+before_install: tools/apt-get-install-deps.sh
 
+# Default dependency installation step #2: nop intentionally.
+# Jobs can add their own dependencies on top of 'before_install' by redefinig
+# the 'install' stage in the matrix below.
+install: true
+
+# Default job task: run tests as defined in the $OPT environment variable.
+# Jobs can redefine the 'script' stage in the matrix below.
+script: tools/run-tests.py $OPTS
+
+# All the job definitions in the matrix.
 matrix:
   include:
+    - env: OPTS="--check-signed-off-travis --check-cppcheck --check-doxygen --check-vera --check-license --check-magic-strings"
+    - env: OPTS="--jerry-debugger"
+    - env: OPTS="--jerry-tests --jerry-test-suite"
+    - env: OPTS="--jerry-tests --jerry-test-suite --toolchain=cmake/toolchain_linux_armv7l.cmake" TIMEOUT=300
+      install: tools/apt-get-install-qemu-arm.sh
+    - env: OPTS="--buildoption-test"
+    - env: OPTS="--jerry-tests --jerry-test-suite --buildoptions=--jerry-libc=off,--compile-flag=-m32,--cpointer-32bit=on"
+    - env: OPTS="--unittests"
+    - env: OPTS="--unittests --buildoptions=--cmake-param=-DFEATURE_INIT_FINI=ON"
+    - env: OPTS="--test262"
+      install: sudo timedatectl set-timezone America/Los_Angeles
+    - env: OPTS="--check-pylint"
+      install: pip install --user pylint==1.6.5
     - os: osx
+      before_install: tools/brew-install-deps.sh
       env: OPTS="--jerry-tests --jerry-test-suite --unittests"
-    - os: linux
-      before_install:
-        - tools/apt-get-install-deps.sh
-        - echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-
+    - install: echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-
+      env:
+        # Declaration of the encrypted COVERITY_SCAN_TOKEN, created via the
+        # "travis encrypt" command using the project repo's public key.
+        - secure: "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"
       addons:
         coverity_scan:
           project:
@@ -37,7 +51,7 @@ matrix:
           notification_email: rsipka.uszeged@partner.samsung.com
           build_command: "tools/build.py --clean"
           branch_pattern: master
-      env: OPTS=""
+      script: true # Changed to nop, Coverity Scan has already built the project by the time 'script' stage is reached.
     - compiler: gcc-5
       addons:
         apt:
@@ -60,20 +74,9 @@ matrix:
     - env: OPTS="--check-pylint"
   fast_finish: true
 
-before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then tools/apt-get-install-deps.sh; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]] && [[ "$INSTALL_QEMU_ARM" == "yes" ]]; then tools/apt-get-install-qemu-arm.sh; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then tools/brew-install-deps.sh; fi
-  - if [[ "$OPTS" == "--test262" ]]; then sudo timedatectl set-timezone America/Los_Angeles; fi
-  - if [[ "$OPTS" == *"--check-pylint"* ]]; then pip install --user pylint==1.6.5; fi
-
-install:
-
-script: if [[ -n "$OPTS" ]]; then tools/run-tests.py $OPTS; fi
-
 # The channel name "chat.freenode.net#jerryscript"
 # is encrypted against Samsung/jerryscript
-# to prevent IRC spam of forks
+# to prevent IRC spam of forks.
 #
 # travis encrypt -r "Samsung/jerryscript" "chat.freenode.net#jerryscript"
 notifications: