AWS apache optimization

Not sure if it is fit for ServerFault...

We have an e-commerce website, which we are planning to host on AWS. The CMS engine is Drupal7. I have plans to use 2 m4.xlarge (4 vCPU 16GiB) autoscaled across an ELB, hosted in eu-west-1 (Ireland). I am trying to achieve website speed and in process to fine-tune the apache. I have not edited the httpd.conf and it is as it was for httpd2.4. Though I have a Virtual Host.

<VirtualHost *:80>
        ServerName website.com
        ServerAlias www.website.com
        DocumentRoot /var/www/html/website
        DirectoryIndex index.php index.html

        <Directory /var/www/html/website>
                #Options Indexes FollowSymLinks MultiViews
                Options -Indexes
                AllowOverride All
                Order allow,deny
                Allow from all
        </Directory>
</VirtualHost>

<VirtualHost *:443>
        DocumentRoot /var/www/html/website
        DirectoryIndex index.php index.html
        ServerName website.com
        ServerAlias www.website.com
        SSLEngine On
        SSLCertificateFile /etc/ssl/certs/website.crt
        SSLCertificateKeyFile /etc/ssl/certs/website.key
        <Directory /var/www/html/website>
                #Options Indexes FollowSymLinks MultiViews
                Options -Indexes
                AllowOverride All
                Order allow,deny
                Allow from all
                Require all granted
        </Directory>
</VirtualHost>

Can anyone please suggest some mechanisms?

> Current Test Setup:
>     Amazon Linux t2.micro
>     Server version: Apache/2.4.25 (Amazon)
>     PHP 5.6.29 (cli) (built: Jan 18 2017 19:08:44)
>     Database: Amazon RDS MySQL 5.6.27 db.t2.micro (1 vCPU 1 GiB)
>     info.php reflects Server API as Apache 2.0 Handler


    [root@ip-10-1-39-3 kirana11]# httpd -V
    Server version: Apache/2.4.25 (Amazon)
    Server built:   Jan 19 2017 16:55:49
    Server's Module Magic Number: 20120211:67
    Server loaded:  APR 1.5.1, APR-UTIL 1.4.1
    Compiled using: APR 1.5.1, APR-UTIL 1.4.1
    Architecture:   64-bit
    Server MPM:     prefork
      threaded:     no
        forked:     yes (variable process count)
    Server compiled with....
     -D APR_HAS_SENDFILE
     -D APR_HAS_MMAP
     -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
     -D APR_USE_SYSVSEM_SERIALIZE
     -D APR_USE_PTHREAD_SERIALIZE
     -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
     -D APR_HAS_OTHER_CHILD
     -D AP_HAVE_RELIABLE_PIPED_LOGS
     -D DYNAMIC_MODULE_LIMIT=256
     -D HTTPD_ROOT="/etc/httpd"
     -D SUEXEC_BIN="/usr/sbin/suexec"
     -D DEFAULT_PIDLOG="/var/run/httpd/httpd.pid"
     -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
     -D DEFAULT_ERRORLOG="logs/error_log"
     -D AP_TYPES_CONFIG_FILE="conf/mime.types"
     -D SERVER_CONFIG_FILE="conf/httpd.conf"

When I run Google PageSpeed Insight, our scores are not very good Mobile Speed 40/100 Desktop Speed 50/100 How do i optimize this?

PS. I am aware that CDN would increase the scores and taking a more powerful instance+db.instance would also be useful